U.S. Department of the Interior

U.S. Geological Survey

Data Series 879

Prepared in cooperation with the Sweetwater Authority

Water- and Air-Quality and Surficial Bed-Sediment 

Monitoring of the Sweetwater Reservoir Watershed, 

San Diego County, California, 2003–09
Cover. Views of the Sweetwater Reservoir and its surrounding area. Photography by Gregory O. Mendez, U.S. Geological Survey.
Water- and Air-Quality and Surficial BedSediment Monitoring of the Sweetwater 

Reservoir Watershed, San Diego County, 

California, 2003–09

By Gregory O. Mendez, Michael S. Majewski, William T. Foreman, and Andrew 

Morita

Prepared in cooperation with the Sweetwater Authority

Data Series 879

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

SALLY JEWELL, Secretary

U.S. Geological Survey

Suzette M. Kimball, Acting Director

U.S. Geological Survey, Reston, Virginia: 2015

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Suggested citation:

Mendez, G.O., Majewski, M.S., Foreman, W.T., and Morita, Andrew, 2015, Water- and air-quality and surficial bedsediment monitoring of the Sweetwater Reservoir watershed, San Diego County, California, 2003–09: U.S. Geological 

Survey Data Series 879, 224 p., http://dx.doi.org/10.3133/ds879

ISSN 2327-638X (online)
iii

Contents

Abstract...........................................................................................................................................................1

Introduction.....................................................................................................................................................2

Purpose and Scope .......................................................................................................................................4

Study Design...................................................................................................................................................4

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results .................6

Water Sampling Strategy ....................................................................................................................6

Water Methods .....................................................................................................................................8

Volatile Organic Compounds......................................................................................................8

Semivolatile Organic Compounds...........................................................................................23

Metals .........................................................................................................................................23

Water-Quality Assurance..................................................................................................................23

Water Results ......................................................................................................................................24

Air Sampling Strategy ........................................................................................................................50

Air Methods .........................................................................................................................................50

Volatile Organic Compounds....................................................................................................50

Semivolatile Organic Compounds...........................................................................................50

Metals .........................................................................................................................................52

Air-Quality Assurance........................................................................................................................53

Air Results............................................................................................................................................54

Surficial Bed-Sediment Sampling Strategy....................................................................................58

Surficial Bed-Sediment Methods.....................................................................................................63

Surficial Bed-Sediment Quality Assurance....................................................................................63

Surficial Bed-Sediment Results .......................................................................................................63

Summary........................................................................................................................................................63

References Cited..........................................................................................................................................81

Appendix........................................................................................................................................................85

Appendix A. Water-Quality Control..................................................................................................86

Appendix B. Air Quality Control .......................................................................................................86

Appendix C. Surficial Bed-Sediment Quality Control....................................................................87
iv

Figures

1. Map showing the general vicinity of Sweetwater and Loveland Reservoirs

and surrounding watershed, San Diego County, California...................................................3

2. Map showing water, air, and surficial bed sediment sampling sites and the

alignment of State Route 125 near the Sweetwater Reservoir, San Diego

County, California..........................................................................................................................4

3. Map showing water and surficial bed sediment sampling sites in Loveland

Reservoir, San Diego County, California ...................................................................................5

4. Figures showing A, concentrations in air of methyl tert-butyl ether (MTBE),

benzene, and toluene at the Sweetwater Reservoir (SWR) atmospheric

sampling site; and concentrations in air and water of B, MTBE; C, benzene; and

D, toluene at SWR near the pump tower (site SWR01) and at center of minimum

pool (site SWR03), San Diego County, California...................................................................26

Tables

1. Site identification numbers, other identifiers, and corresponding site names,

Sweetwater and Loveland Reservoirs, San Diego County, California.................................6

2. Constituent class, medium, sample type, and numbers of constituents

analyzed in the environmental and quality-control samples collected from the

Sweetwater Reservoir watershed, San Diego County, California........................................7

3. Water-quality depth-profile data for dissolved oxygen, pH, specific

conductance, and water temperature for each sampling site and period for the

Sweetwater Reservoir watershed, San Diego County, California........................................9

4A. Volatile organic compounds analyzed in whole-water samples, using

U.S. Geological Survey National Water Quality Laboratory schedule 2020, for

the Sweetwater Reservoir watershed, San Diego County, California...............................25

4B. Analytical results for Volatile Organic Compounds detected in whole-water 

samples, using U.S. Geological Survey National Water Quality Laboratory schedule 

2020, from the Sweetwater Reservoir watershed, San Diego County, California 

(provided as a Microsoft Excel® file).......................................................................................26

5A. Base-neutral acid compounds analyzed in whole-water samples, using

U.S. Geological Survey National Water Quality Laboratory schedule 1383, for

the Sweetwater Reservoir watershed, San Diego County, California...............................28

5B. Analytical results for base-neutral acid compounds detected in whole-water 

samples, using U.S. Geological Survey National Water Quality Laboratory 

schedule 1383, from the Sweetwater Reservoir watershed, San Diego County, 

California (provided as a Microsoft Excel® file).....................................................................28

6A. Pesticide compounds analyzed in filtered-water samples, using U.S. Geological

Survey National Water Quality Laboratory schedule 2003, for the Sweetwater

Reservoir watershed, San Diego County, California.............................................................29

6B. Analytical results for pesticide compounds detected in filtered-water samples,

using U.S. Geological Survey National Water Quality Laboratory schedule 2003,

from the Sweetwater Reservoir watershed, San Diego County, California......................30

7A. Pesticide compounds analyzed in filtered-water samples, using U.S. Geological

Survey National Water Quality Laboratory schedule 2060, for the Sweetwater

Reservoir watershed, San Diego County, California.............................................................32

7B. Analytical results for pesticide compounds detected in filtered-water samples

using U.S. Geological Survey National Water Quality Laboratory schedule 2060,

from the Sweetwater Reservoir watershed, San Diego County, California......................33
v

8A. Anthropogenic organic indicator compounds analyzed in filtered-water

samples, using U.S. Geological Survey National Water Quality Laboratory 

schedule 1433, for the Sweetwater Reservoir watershed, San Diego County,

California ......................................................................................................................................35

8B. Analytical results for anthropogenic organic indicator compounds 

detected in filtered-water samples, using U.S. Geological Survey National

Water Quality Laboratory schedule 1433, from Sweetwater Reservoir

watershed, San Diego County, California...............................................................................36

9A. Analytical results for metals in whole-water samples, using U.S. Geological

Survey National Water Quality Laboratory schedule 1080, from Sweetwater

Reservoir watershed, San Diego County, California.............................................................38

9B. Analytical results for metals in filtered-water samples, using U.S. Geological

Survey National Water Quality Laboratory schedule 2710, from Sweetwater

Reservoir watershed, San Diego County, California.............................................................48

10A. Analytical results for high-volatility volatile organic compounds (VOCs) 

processed at the Oregon Graduate Institute for air samples collected from the

Sweetwater Reservoir atmospheric site, San Diego County, California...........................55

10B. Analytical results for medium/low-volatility volatile organic compounds 

(VOCs) processed at the Oregon Graduate Institute for air samples collected 

from the Sweetwater Reservoir atmospheric site, San Diego County, California

(provided as a Microsoft Excel® file).......................................................................................58

11A. Polycyclic aromatic hydrocarbons (PAHs) and alkylated-PAH compounds

analyzed in air samples, processed at the U.S. Geological Survey National

Water Quality Laboratory, from the Sweetwater Reservoir atmospheric site,

San Diego County, California ....................................................................................................59

11B. Analyitcal results for Polycyclic Aromatic Hydrocarbon (PAH) and alkylated 

PAH compounds detected in air samples, processed at the U.S. Geological Survey’s 

National Water Quality Laboratory, from the Sweetwater Reservoir atmospheric site, 

San Diego County, California (provided as a Microsoft Excel® file)...................................59

12A. Pesticide compounds analyzed in air samples, processed at the U.S. Geological 

Survey National Water Quality Laboratory, from the Sweetwater Reservoir

atmospheric site, San Diego County, California ....................................................................60

12B. Analytical results for pesticide compounds detected in air samples, processed

at the U.S. Geological Survey National Water Quality Laboratory, from the

Sweetwater Reservoir atmospheric site, San Diego County, California...........................61

13. Analytical results for metals in air samples, processed at the U.S. Geological 

Survey Geologic Division laboratory, collected from the Sweetwater Reservoir 

atmospheric site, San Diego County, California (provided as a Microsoft Excel® file)...63

14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in

surfical bed sediment, using U.S. Geological Survey National Water Quality

Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San

Diego County, California ............................................................................................................64

15. Analytical results for organochlorine (OCs) and polychlorinated biphenly

(PCBs) compounds in surfical bed sediment, using U.S. Geological Survey

National Water Quality Laboratory schedule 5504, from the Sweetwater

Reservoir watershed, San Diego County, California.............................................................71

16. Analytical results for metals in surficial bed-sediment samples, using the U.S. 

Geological Survey Geologic Division laboratory, collected from the 

Sweetwater Reservoir watershed, San Diego County, California......................................74

Tables—Continued
vi

Appendix Tables

A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in

whole-water samples, using U.S. Geological Survey National Water Quality

Laboratory schedule 2020, collected from the Sweetwater Reservoir

watershed, San Diego County, California...............................................................................89

A1B. Quality-control field blank and field replicate results for volatile organic

compound (VOC) concentrations in whole-water samples, using U.S.

Geological Survey National Water Quality Laboratory schedule 2020, collected

from the Sweetwater Reservoir (SWR) watershed, San Diego County, California .........99

A1C. Quality-control replicate comparison for volatile organic compound (VOC)

detected in whole-water samples, using U.S. Geological Survey National

Water Quality Laboratory schedule 2020, collected from the Sweetwater

Reservoir (SWR) watershed, San Diego County, California ..............................................109

A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in

whole-water samples, using U.S. Geological Survey National Water Quality

Laboratory schedule 1383, collected from the Sweetwater Reservoir

watershed, San Diego County, California.............................................................................113

A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in

whole-water samples, using U.S. Geological Survey National Water Quality

Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR)

watershed, San Diego County, California.............................................................................115

A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, 

using U.S. Geological Survey National Water Quality Laboratory schedule 2003, 

collected from Sweetwater Reservoir, San Diego County, California .............................119

A4. Quality-control replicate results of pesticide concentrations in filteredwater samples, using U.S. Geological Survey National Water Quality 

Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, 

San Diego County, California ..................................................................................................123

A5. Quality-control replicate results for anthropogenic indicator compounds (AICs)

analyzed in filtered-water samples, using U.S. Geological Survey National

Water Quality Laboratory schedule 1433, collected from the Sweetwater

Reservoir watershed, San Diego County, California...........................................................126

A6A. Quality-control spike results for metals in whole-water samples, using 

U.S. Geological Survey National Water Quality Laboratory schedule 1080, 

collected from the Sweetwater Reservoir, San Diego County, California.......................130

A6B. Quality-control replicate and blank results for metals in whole-water samples,

using U.S. Geological Survey National Water Quality Laboratory schedule 1080,

collected from the Sweetwater Reservoir, San Diego County, California.......................131

A6C. Quality-control replicate comparison for metals in whole-water samples collected 

from the Sweetwater Reservoir watershed, San Diego County, California....................133

B1A. Quality-control replicate results for high-volatility volatile organic compounds

(VOCs) processed at the Oregon Graduate Institute for air samples collected

from the Sweetwater Reservoir atmospheric site, San Diego County, California.........136

B1B. Quality-control replicate results for medium/low-volatility volatile organic

compounds (VOCs) processed at the Oregon Graduate Institute for air samples

collected from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................137
vii

Appendix Tables—Continued

B1C. Quality-control replicate comparison for medium/low-volatility volatile organic

compounds (VOCs) detected in air samples, processed at the Oregon Graduate

Institute, from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................141

B2A. Quality-control travel spike results for high-volatility volatile organic

compounds (VOCs) processed at the Oregon Graduate Institute for air samples

collected from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................143

B2B. Quality-control analytical travel blank results for high-volatility volatile organic

compounds (VOCs) processed at the Oregon Graduate Institute for air samples

collected from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................144

B2C. Quality-control analytical lot blank results for high-volatility volatile organic

compounds (VOCs) processed at the Oregon Graduate Institute for air samples

collected from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................148

B2D. Quality-control analytical laboratory blank results for high-volatility volatile

organic compounds (VOCs) processed at the Oregon Graduate Institute for air

samples collected from the Sweetwater Reservoir atmospheric site, San Diego

County, California......................................................................................................................152

B3A. Quality-control travel spike results for medium/low-volatility volatile organic

compounds (VOCs) processed at the Oregon Graduate Institute for air samples

collected from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................156

B3B. Quality-control travel blank detections for medium/low-volatility volatile

organic compound (VOCs) processed at the Oregon Graduate Institute for air

samples collected from the Sweetwater Reservoir atmospheric site, San Diego

County, California......................................................................................................................164

B3C. Quality-control lot blank detections for medium/low-volatility volatile organic

compound (VOCs) processed at the Oregon Graduate Institute for air samples

collected from the Sweetwater Reservoir atmospheric site, San Diego County,

California ....................................................................................................................................174

B3D. Quality-control laboratory blank detections for medium/low-volatility volatile

organic compounds (VOCs) processed at the Oregon Graduate Institute for air

samples collected from the Sweetwater Reservoir atmospheric site, San Diego

County, California......................................................................................................................184

B4A. National Water Quality Laboratory quality-control reagent-spike results for

polycyclic aromatic hydrocarbon (PAH) compound recoveries for the

Sweetwater Reservoir atmospheric site, San Diego County, California.........................194

B4B. Quality-control results for polycyclic aromatic hydrocarbon (PAH) compounds

detected in National Water Quality laboratory and field reagent-blanks.

National Water Quality Laboratory solvent-blank samples for the Sweetwater

Reservoir atmospheric site, San Diego County, California................................................196

B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for

pesticides in air for samples collected from the Sweetwater Reservoir

atmospheric site, San Diego County, California ..................................................................199
viii

Appendix Tables—Continued

B5B. National Water Quality Laboratory quality-control blank results for pesticide in

air samples collected for the Sweetwater Reservoir atmospheric site, San

Diego County, California ..........................................................................................................203

B6A. U.S. Geological Survey Geologic Division Laboratory quality-control recovery 

results for metals from laboratory reagent-spike recoveries for the Sweetwater 

Reservoir atmospheric site, San Diego County, California................................................207

B6B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate

results for metals from the Sweetwater Reservoir atmospheric site, San Diego

County, California......................................................................................................................210

B6C. U.S. Geological Survey Geologic Division Laboratory quality-control blank

replicate comparison for metals from the Sweetwater Reservoir atmospheric

site, San Diego County, California..........................................................................................213

C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs)

in surfical bed sediment, using U.S. Geological Survey National Water Quality

Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San

Diego County, California ..........................................................................................................215

C2. Quality-control replicate results for organochlorine (OCs) and polychlorinated

biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological

Survey National Water Quality Laboratory schedule 5504, from the Sweetwater

Reservoir watershed, San Diego County, California...........................................................219

C3A. U.S. Geological Survey Geologic Division Laboratory quality-control

matrix-spike results for metals in surficial bed-sediment samples collected in

the Sweetwater Reservoir watershed, San Diego County, California.............................220

C3B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate

results for metals in surficial bed-sediment samples collected in the

Sweetwater Reservoir, San Diego County, California ........................................................222

C3C. U.S. Geological Survey Geologic Division Laboratory quality-control replicate

comparison for metals in surficial bed-sediment samples collected in the

Sweetwater Reservoir, San Diego County, California ........................................................224
ix

AOI anthropogenic organic indicator

BNAs base neutral acids 

CCRMP Canadian Certified Reference Materials Project

GC/MS gas chromatography/mass spectrometry

GFF glass-fiber filter

LFDD low-flow diversion dam

LLR Loveland Reservoir

LRL laboratory reporting level 

MTBE methyl tert-butyl ether

NWIS National Water Inventory System

NWQL National Water Quality Laboratory

OC Organochlorine compound

PAHs polycyclic aromatic hydrocarbons

PCBs polychlorinated biphenyls

PSE pressurized-solvent extraction

PUF polyurethane foam

QA quality assurance

QFF quartz fiber filters

SIM selected-ion monitoring

SOCs semivolatile organic compounds

SPE solid-phase extraction

SR State Route

SRM standard reference material

SWR Sweetwater Reservoir

TSP total suspended particle

URDS urban runoff diversion system

USEPA U.S. Environmental Protection Agency

USGS U.S. Geological Survey

QC quality control

VOC volatile organic compound

Abbreviations
x

Conversion Factors

SI to Inch/Pound

Multiply By To obtain

Length

centimeter (cm) 0.3937 inch (in.)

millimeter (mm) 0.03937 inch (in.)

meter (m) 3.281 foot (ft) 

kilometer (km) 0.6214 mile (mi)

meter (m) 1.094 yard (yd) 

Area

square kilometer (km2) 247.1 acre

square kilometer (km2) 0.3861 square mile (mi2)

Volume

liter (L) 0.2642 gallon (gal)

milliliter (mL) 0.03382 ounce, fluid (fl. oz)

cubic meter (m3) 264.2 gallon (gal) 

cubic meter (m3) 0.0008107 acre-foot (acre-ft) 

cubic hectometer (hm3) 810.7 acre-foot (acre-ft) 

Mass

gram (g) 0.03527 ounce, avoirdupois (oz)

milligram (mg) 0.00003527 ounce, avoirdupois (oz)

nanogram (ng) 0.00000000003527 ounce, avoirdupois (oz)

Pressure

kilopascal (kPa) 0.009869 atmosphere, standard (atm)

Density

milligram per cubic meter (mg/m3) 0.00000006242 pound per cubic foot (lb/ft3) 

gram per cubic centimeter (g/cm3) 62.4220 pound per cubic foot (lb/ft3)

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

°F = (1.8×°C) + 32

Temperature in degrees Celsius (°C) may be converted to the Kelvin (K) scale as follows:

K = °C + 273.15

Concentration of a chemical (y) in the atmosphere in units of nanograms per cubic meter (ng/m3) 

can be converted to the dimensionless volume-fraction units of parts per billion by volume 

(ppbv) as follow:

Concentration of chemical y in ppbv = (concentration in ng/m3) × (R × T)/(p × My) 

where 

p is pressure in Pascal (Pa);

T is temperature in Kelvin (K);

My is the molecular weight of the chemical y in grams per mole; and 

R, the gas constant, is 8.314 Pa-m3 per mole-K.

Vertical coordinate information is referenced to the North American Vertical Datum of 1988 

(NAVD 88).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Altitude, as used in this report, refers to distance above the vertical datum.

Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius 

(μS/cm at 25 °C).

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) 

or micrograms per liter (μg/L).
xi

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Water- and Air-Quality and Surficial Bed-Sediment 

Monitoring of the Sweetwater Reservoir Watershed, 

San Diego County, California, 2003–09

by Gregory O. Mendez, Michael S. Majewski, William T. Foreman, and Andrew Morita

Abstract

In 1998, the U.S. Geological Survey, in cooperation 

with the Sweetwater Authority, began a study to assess the 

overall health of the Sweetwater watershed in San Diego 

County, California. This study was designed to provide a 

data set that could be used to evaluate potential effects from 

the construction and operation of State Route 125 within the 

broader context of the water quality and air quality in the 

watershed. The study included regular sampling of water, air, 

and surficial bed sediment at Sweetwater Reservoir (SWR) for 

chemical constituents, including volatile organic compounds 

(VOCs), base-neutral and acid- extractable organic compounds 

(BNAs) that include polycyclic aromatic hydrocarbons 

(PAHs), pesticides, and metals. Additionally, water samples 

were collected for anthropogenic organic indicator compounds 

in and around SWR. Background water samples were 

collected at Loveland Reservoir for VOCs, BNAs, pesticides, 

and metals. Surficial bed-sediment samples were collected for 

PAHs, organochlorine pesticides, and metals at Sweetwater 

and Loveland Reservoirs. 

To monitor changes in contaminant concentration in 

water and air at SWR during the construction and operation 

of State Route 125, this study was divided into three phases. 

Phase One sampling (September 1998 to September 2004) 

was designed to establish baseline conditions for target 

compounds in terms of detection frequency and concentration 

in air and water. Phase Two (October 2004 to September 

2007) continued sampling at selected monitoring sites during 

construction of State Route 125 to assess any effect from the 

construction process and the use of heavy equipment to build 

the roadway. Phase Three (October 2007 to August 2009) 

continued sampling for 2 years after the opening of State 

Route 125 to assess the potential changes in water quality 

related to vehicle emissions from the roadway alignment. 

Surficial bed-sediment samples were collected three times 

during the study—at the beginning of the study, at the start of 

Phase Two, and at the end of the study. 

This report describes the study design and the sampling 

and analytical methods and presents data from water, air, 

and surficial bed-sediment samples collected from the sixth 

to eleventh years of the study (October 2003–August 2009), 

spanning the last year of Phase one and all of Phases Two and 

Three. Data collected during the first 5 years of sampling have 

been previously published.

Three types of quality-control samples were used in this 

study—matrix spikes, blanks, and replicates. Matrix-spike data 

are considered to be adequate if the recovery concentration 

is within 30 percent of the matrix concentration. Replicate 

data are considered to be adequate if the replicate sample 

concentration is within 30 percent of the environmental 

sample concentration. Additionally, surrogate compounds 

were added to most samples to monitor sample-specific 

performance of the analytical method. 

Most VOC matrix-spike recovery data associated with 

water samples are within acceptable criteria, but three VOCs 

had recoveries below the acceptable criteria; these compounds 

may not have been detected in water samples if they were 

present at low concentrations. Data for blanks associated with 

water samples for VOCs and metals showed no detections 

above their laboratory reporting levels. Most replicate data are 

within acceptable criteria. Quality-control data for VOC air 

samples resulted in flagging several reported concentrations 

for acetone, benzene, ethenylbenzene, and naphthalene 

because they may be biased high. Acetone, benzene, and 

toluene were detected at low concentrations in almost every 

VOC air blank. Some PAH and pesticide concentrations in 

air samples were designated as estimated because of method 

performance limitations. PAHs in surficial bed sediment had 

83 percent of surrogates below the acceptable criteria. No 

matrix-spike data for metals in surficial bed sediment were 

outside the acceptable criteria; only beryllium had a replicate 

comparison outside the acceptable criteria. 
2 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Sampling results show concentrations of the gasoline 

oxygenate methyl tert-butyl ether in water and air samples 

declined after it was phased out by the State of California 

in January 2004. The largest concentrations of gasoline 

hydrocarbons benzene and toluene in water were detected at 

or near the surface of the SWR. Isophorone and phenol were 

the two most frequently detected BNA compounds in water. 

Diuron, prometon, and simazine were the most frequently 

detected pesticide compounds in water. Concentrations of 

benzene and toluene in air samples were highest during the 

cooler months and had a consistent seasonal pattern over 

time. Ten PAH compounds were detected frequently in air 

samples. Twelve pesticide compounds were also detected in 

air samples. Surficial bed-sediment samples were analyzed for 

53 PAHs; 22 of the compounds had one or more detections. 

Surficial bed-sediment samples were analyzed for 22 organic 

compounds; only 6 compounds had one or more detections. 

Surficial bed-sediment samples were analyzed for 37 metals.

Introduction

The Sweetwater Authority (hereinafter referred to 

as the “Authority”), under the guidance of its Board of 

Directors, operates a public drinking-water supply system 

for over 186,900 residential and commercial customers in 

Chula Vista and National City, California. The Sweetwater 

Reservoir (SWR) (fig. 1) is about 15 km southeast of San 

Diego, Calif., and has a storage capacity of 34.6 hm3. The 

Authority also stores water at Loveland Reservoir (LLR; 

fig. 1), which is about 30 km east of SWR near Alpine, Calif., 

and has a storage capacity of 31.3 hm3. In addition to the 

two reservoirs, the Authority operates three deep wells in 

National City and several wells near the Sweetwater River 

in Chula Vista. The Reynolds Desalination Facility, in Chula 

Vista, treats brackish groundwater from the wells along the 

Sweetwater River. Approximately 70 percent of the water 

provided by the Authority comes from local supplies that 

include the Sweetwater River, the Sweetwater alluvium, and 

the San Diego Formation. The remaining water provided is 

imported from the Colorado River and the Sacramento/San 

Joaquin River systems through pipelines and aqueducts. Local 

reservoir and imported water are treated for use as drinking 

water at the Robert A. Perdue Treatment Plant at the SWR.

The Sweetwater River watershed covers 466 km2 (fig. 1). 

Although much of the land is undeveloped, the area includes 

the Sycuan and Viejas Indian Reservations (both having 

gaming facilities resulting in high vehicle traffic), part of the 

Cleveland National Forest, agricultural land, rural residential 

acreage, urban and suburban residential development, 

mining and industrial land use, commercial recreation, and 

commercial business development. The watershed also 

includes three 18-hole golf courses. The Authority started 

a shore fishing program in 2005 in a restricted area on the 

south side of the SWR. Shore fishing is allowed at LLR in a 

restricted area at the east end of the reservoir. The Authority 

maintains one motorized boat at each reservoir for routine 

water-quality sampling and regular shore patrols. No other 

boating is allowed at either reservoir.

The Authority is concerned about the impact that the 

increasing growth and development in the Sweetwater River 

watershed will have on the quality of the drinking-water 

supply. Because of this concern, the Authority has initiated a 

variety of efforts to protect the watershed, including source 

assessments, total organic carbon assessments (Fram and 

others, 2001), watershed stakeholders outreach to identify 

issues of concern, and the construction and operation of an 

urban runoff diversion system (URDS; fig. 2). The URDS 

diverts unwanted water from the river and surrounding 

urban runoff to a point downstream from the SWR. These 

programs help the Authority evaluate and manage the 

overall environmental health of the watershed by monitoring 

changes that can degrade the quality of the water supply 

and necessitate additional water treatment as the population 

increases and land use intensifies. To help improve knowledge 

of potential watershed issues that will facilitate the Authorities 

evaluation and management of water resources, the U.S. 

Geological Survey (USGS), in cooperation with the Authority, 

began a monitoring study in 1998. Data collected during the 

first 5 years of sampling are published in Majewski and others 

(2002) and Mendez and others (2007, 2008).

In addition to the increasing urbanization pressures 

within the watershed, another Authority concern was the 

construction and operation of the State Route 125 (SR 125) 

alignment project. In 1984, the San Diego Association of 

Governments added SR 125 to the Regional Transportation 

Plan as part of the future highway system of San Diego. The 

SR 125 project consists of approximately 18 km of roadway 

construction/alignment that extends from SR 54 (northern 

terminus) to interstate 905 (southern terminus; figs. 1 and 2). 

The project plans included initial construction of a four-lane 

toll way, completed in 2007. Two additional lanes may be 

added for dedicated transit purposes such as high-occupancy 

vehicle and (or) light-rail operations (California Department 

of Transportation, 2001). Approximately 200,000 vehicles per 

day, including a high percentage (more than 10 percent) of 

heavy diesel trucks from the United States and Mexico, are 

expected to travel SR 125. The SR 125 alignment is elevated 

above the reservoir surface and is within about 150 m of the 

reservoir at its nearest point. Because the SWR is downwind 

of the alignment, the Authority was concerned that toxic 

vehicle emissions, paved road dust, and pesticides used on the 

roadside might enter the reservoir by atmospheric deposition 

in concentrations that could affect public health and the cost of 

treating the drinking-water supply. 

In 1996, the Authority commissioned a study (Ogden 

Environmental and Energy Services, 1997) to model the 

atmospheric depositional loading to the SWR. The model 

included a variety of toxic compounds from vehicle emissions 

and projected risks associated with the SR 125 alignment. 

The predicted concentrations of select contaminants were 
Introduction 3

compared with the standards set by the California Safe 

Drinking Water Act (California Environmental Protection 

Agency, 1986) and to California and Federal maximum 

contaminant levels. The results of the Ogden study showed 

drinking-water guidance levels for one or more contaminants 

could be exceeded in the three freeway construction options. 

Another modeling study done in 1999 resulted in similar 

conclusions (Byard, 1999). Sources of uncertainty that could 

affect the interpretation of these modeling studies include the 

estimates of vehicle emissions and the roles of regional air 

pollution and land use in the watershed. The Authority and 

the U.S. Environmental Protection Agency (EPA) Region IX 

concluded that the findings in the Ogden and Byard reports 

warranted the implementation of a monitoring program to 

characterize the potential impact that atmospheric deposition 

of vehicular emissions from the operation of SR 125 might 

have on the quality of the drinking water stored in SWR. In 

1998, the USGS, in cooperation with the Authority, began a 

study to assess the overall health of the Sweetwater watershed 

to provide a data set that could be used to evaluate potential 

effects from the construction and operation of SR 125, within 

the broader context of the water quality and air quality in the 

watershed.

figure 3

Baja California, Mexico

San Diego County, USA

Alpine

Pacific Ocean

Sweetwater

River

watershed

Selected south

San Diego County

watersheds

0

0 5 10 KILOMETERS

5 10 MILES

8

5

8

94

94

54

125

125

Loveland

Reservoir

Sweetwater

Reservoir

Otay

Reservoir

Sweetwater River 805

Lake or reservoir

River or stream

Major road

EXPLANATION

905

San Diego

Area shown in

figure 2

Area shown in

figure 3

Chula

Vista

National

City

Study

Area San Diego

Los

Angeles

San

Francisco CALIFORNIA

Pacific Ocean

Base from U.S. Geological Survey digital data, 1:100,000, 1981–89;

Universal Transverse Mercator Projection (NGVD 29), Zone 11.

Figure 1. The general vicinity of Sweetwater and Loveland Reservoirs and surrounding watershed, San Diego County, California.
4 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

SWR01 near pump tower

SWR02 near Vista del Lago station 

SWR03 center of minimum pool

SWR04 near recreation area 

SWR05 minimum pool boundary East

SWR06 east-end reservoir-fill boundary 

SWR07 near Gum Tree Cove Pond 

 A Vista del Lago

 B Gum Tree Cove 

Urban Runoff

 Diversion System ponds—

Water and surficial bed-

 sediment sampling site— Perdue Treatment Plant - 

finished water

Perdue Treatment Plant -

 imported raw water

 Sweetwater River at

 low-flow diversion dam

Water sampling site— 

S17

S17

S17

Sweetwater River

low-flow

diversion dam

(LFDD)

01

02 03

04

05

06

07

08

09

A

B

Sweetwater Reservoir Atmospheric sampling site

 (AIR01)

Sediment core

 sampling site

EXPLANATION

0 0.5 1 MILE

0 0.5 1 KILOMETER

54

125

125

Sweetwater Reservoir—

 minimum pool

 boundary

SR-125 alignment

Road

River

Pipeline

LFDD

SWR08 

SWR09 

Base from U.S. Geological Survey digital data, 1:100,000, 1981–89;

Universal Transverse Mercator Projection (NGVD 29), Zone 11.

Figure 2. Water, air, and surficial bed sediment sampling sites and the alignment of State Route 125 near the Sweetwater Reservoir, 

San Diego County, California.

Purpose and Scope

This report provides data from water, air, and surficial 

bed-sediment samples that were collected from October 2003 

through August 2009 (water years 2004–09). This report is 

the fourth in a series of reports that describe the monitoring 

activities, and presents data that will be used to assess the 

potential effect on water quality in SWR resulting from 

land-use changes and development in the watershed. 

The scope of this study is to provide analytical results 

collected over time from three environmental media—water, 

air, and surficial bed sediment—and determine whether any 

measured changes in reservoir water quality are the result 

of atmospheric deposition of organic chemicals and metals 

originating from the construction and operation of SR 125.

Study Design

This study was designed to provide a data set that could 

be used to evaluate potential effects from the construction and 

operation of SR 125, within the broader context of the water 

and air quality in the watershed. The study design consisted 

of three phases: Phase One sampling was performed from 

October 1998 through September 2004; Phase Two sampling 

was performed from October 2004 through October 2007; 

Phase Three sampling was performed from November 2007 

through August 2009. The objective of Phase One was to 

determine the occurrence and concentration of selected 

organic—volatile organic compounds (VOCs) and polycyclic 

aromatic hydrocarbons (PAHs)—and inorganic (metal) 
Study Design 5

compounds in each of the three environmental media (water, 

air, and surficial bed sediments) in order to establish baseline 

conditions for these targeted compounds. The objective 

of Phase Two was to continue monitoring the targeted 

compounds during construction of SR 125 and to compare 

the analytical results to those of Phase One. The objective of 

Phase Three was to continue monitoring the same targeted 

compounds during operation of SR 125 and, where applicable, 

to compare the analytical results to those of Phases One and 

Two. Pesticides and anthropogenic organic indicator (AOI) 

compounds were sampled to look at the overall health of 

the watershed and were not sampled as part of the targeted 

compounds.

Each of the environmental media in the Sweetwater 

watershed were sampled and analyzed for the following 

groups of chemical compounds:

• Surface water—Volatile organic compounds 

(VOCs), semivolatile organic compounds (SOCs) 

[base-neutral/acid extractable compounds (BNAs), 

including polycyclic aromatic hydrocarbons (PAHs), 

pesticides, and anthropogenic organic indicator (AOI) 

compounds], and metals.

• Air—VOCs, SOCs (PAHs and pesticides), and metals.

• Surficial bed sediments—PAHs, organochlorine 

compounds (OCs), total polychlorinated biphenyls 

(PCBs), and metals. 

At the start of Phase One (October 1998), water 

samples were collected at seven sampling sites at SWR 

(sites SWR01–07, fig. 2), two sampling sites at the Perdue 

Treatment Plant (SWR08 and 09), and two at LLR (fig. 3). 

Starting in October 1999, only three of the seven sites at SWR 

(sites SWR01, 03, and 06), both sites at the Perdue Treatment 

Plant (SWR08 and 09), and one site at LLR were sampled. 

Phases Two and Three continued the collecting of waterquality samples for the same three sites at SWR and the one 

site at LLR. 

The SWR atmospheric sampling site was located 

downwind of the proposed SR125 alignment and upwind of 

SWR (site AIR01, fig. 2) along a transect of the predominant 

wind direction. The site is wired for AC power (120 volts), 

equipped with telephone modem access, and secured from 

the general public by a 2-m-high chain-link fence. The site 

includes a fully instrumented meteorological station that 

records hourly mean values of wind speed and direction, 

ambient air temperature and relative humidity at two heights, 

rainfall, and barometric pressure. 

At the beginning of Phase One, surficial bed sediments 

were sampled at 15 sites (Majewski and others, 2002) 

including sites in the URDS. A one-time coring of the SWR 

bed sediments was also completed at the start of Phase One 

(Majewski and others, 2002). During Phase Two (October 

2004), surficial bed-sediment samples were collected at four 

sites in SWR, two sites in LLR, and in the Sweetwater River 

near the low-flow diversion dam (site LFDD; figs. 2 and 3). 

Sediment samples were also collected at the SWR atmospheric 

site (AIR01). At the end of Phase Three (August 2009), 

surficial bed-sediment samples were collected at four sites in 

SWR (two samples at site SWR06 because the site moves with 

the elevation of the reservoir), two sites in LLR, and at site 

LFDD (figs. 2 and 3). 

EXPLANATION

Loveland Reservoir

near dam (LLR01)

Loveland Reservoir

east end near

source inlet (LLR02)

0 0.5 1 MILE

0 0.5 1 KILOMETER

Reservoir

River or stream

Road

Japatul Rd

Dehesa Rd

Water and surficial

bed-sediment sampling site

Base from U.S. Geological Survey digital data, 1:100,000, 1981–89;

Universal Transverse Mercator Projection (NGVD 29), Zone 11.

Figure 3. Water and surficial bed sediment sampling sites in Loveland Reservoir, San Diego County, California.
6 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Sampling Strategy, Sampling 

and Analytical Methods, Quality 

Assurance, and Results

Sampling strategies, methods, quality-assurance steps, 

and data for water, air, and surficial bed-sediment samples are 

presented in the following sections. Interpretative analysis 

of the environmental and quality-control data to address the 

objectives of the study is not included in this report. All site 

identification numbers, other identifiers, and sampling site 

names are listed in table 1. An inventory of samples collected 

and their associated quality assurance (QA) is listed in table 2.

Water Sampling Strategy

Reporting levels for some constituents vary on the 

basis of differences in sample volumes or the presence of 

interferences. All water data are available through the USGS 

National Water Inventory System (NWIS) database web 

interface (http://nwis.waterdata.usgs.gov/nwis). 

Beginning in October 1999, the number of water 

sampling sites at SWR was reduced from seven to three 

(fig. 2), and the number of sampling sites at LLR was reduced 

to one (fig. 3). The locations of the Perdue Treatment Plant 

and Sweetwater River sampling sites did not change. The 

number of sampling sites in the SWR was reduced to focus the 

sampling efforts at “indicator” sites—those sites believed to 

provide the most relevant information without compromising 

the scientific integrity of the project. These indicator sites are:

• SWR01—located near the dam and the pump-tower 

intake for reservoir water to the treatment plant; used 

to monitor the quality of water entering the treatment 

plant.

• SWR03—located near the center of the minimum pool; 

used to monitor the quality of water at the center of the 

reservoir. 

• SWR06—located near the east end of the reservoir; 

used to monitor the quality of water entering the 

reservoir from the Sweetwater River. 

• LLR01—located near the dam; used to monitor the 

quality of the reserve storage water. 

Sites SWR01 and SWR03 are within the minimum pool 

boundary of the reservoir (fig. 2) to ensure that water would 

always be available for sampling throughout the year. Site 

SWR06 is in the eastern third of the reservoir in very shallow 

water. As the water level in the reservoir fell, the water depth 

at this site decreased, and sometimes the bed sediments were 

completely exposed. When reservoir water levels fell below 

1 m, the sampling site was moved west to where the water 

depth was over 1 m. Sampling sites at SWR and LLR were 

marked with stationary buoys anchored to the bottom. 

Three additional water-sampling sites (SWR08, SWR09, 

and LFDD, table 1, fig. 2) were established outside the 

reservoir boundaries. Site SWR08 monitored the quality of 

the finished treated water as it left the treatment plant for 

distribution to customers; this site was sampled because it 

represents an integrated outflow of lake and imported water. 

Site SWR09 monitored the quality of the imported raw water 

Table 1. Site identification numbers, other identifiers, and corresponding site names, Sweetwater and Loveland Reservoirs, San Diego 

County, California.

[See figure 2 for site locations near Sweetwater Reservoir. See figure 3 for site locations at Loveland Reservoir. Quality-assurance/quality-control (QA/QC) site 

is a place holder for the data.]

Site-identification 

number 

Other 

identifiers Site name

324130117002501 SWR01 Sweetwater Reservoir near pump tower

324139117000801 SWR02 Sweetwater Reservoir near Vista del Lago station

324131117000101 SWR03 Sweetwater Reservoir center minimum pool

324126116595701 SWR04 Sweetwater Reservoir near recreation area

324137116592401 SWR05 Sweetwater Reservoir minimum pool boundary East

324209116585001 SWR06 Sweetwater Reservoir east-end reservoir-fill boundary

324147116593501 SWR07 Sweetwater Reservoir near Gum Tree Cove Pond

324132117002701 SWR08 Perdue Treatment Plant—finished water at Sweetwater Reservoir

324137117002901 SWR09 Perdue Treatment Plant—imported raw water at Sweetwater Reservoir

324311116565901 LFDD Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir

324703116473101 LLR01 Loveland Reservoir near dam

324737116453501 LLR02 Loveland Reservoir east-end near-source inlet

324141117001601 AIR01 Sweetwater Reservoir atmospheric site at Sweetwater Dam

88888801 QA/QC Quality-control site for Sacramento Project Office
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 7

Table 2. Constituent class, medium, sample type, and numbers of constituents analyzed in the environmental and quality-control 

samples collected from the Sweetwater Reservoir watershed, San Diego County, California.

Constituent class Medium Sample 

type

Table 

number

Number 

of 

samples

Quality-control type

Qualitycontrol 

table

Number of 

quality-control 

samples

Volatile organic compounds Water Whole 4B 211 Matrix spike A1A 6

Volatile organic compounds Water Whole 4B 211 Matrix-spike replicate A1A 3

Volatile organic compounds Water Whole 4B 211 Equipment blank A1B 4

Volatile organic compounds Water Whole 4B 211 Field blank A1B 3

Volatile organic compounds Water Whole 4B 211 Source-solution blank A1B 1

Volatile organic compounds Water Whole 4B 211 Trip blank A1B 1

Volatile organic compounds Water Whole 4B 211 Replicates A1B and A1C 14

Base neutral acid Water Whole 5B 66 Matrix spike A2A 1

Base neutral acid Water Whole 5B 66 Replicates A2B 3

Pesticides (laboratory schedule 2003) Water Filtered 6B 18 Replicates A3 1

Pesticides (laboratory schedule 2006) Water Filtered 7B 35 Replicates A4 3

Anthropogenic indicator compounds Water Filtered 8B 17 Replicates A5 1

Metals Water Whole 9A 153 Matrix spike A6A 3

Metals Water Whole 9A 153 Matrix-spike replicate A6A 2

Metals Water Whole 9A 153 Field blank A6B 4

Metals Water Whole 9A 153 Replicates A6B and A6C 12

Metals Water Filtered 9B 18 None analyzed 0

High-volatility volatile organic compounds Air Filtered 10A 166 Replicates B1A 14

High-volatility volatile organic compounds Air Filtered 10A 166 Travel matrix spike B2A 37

High-volatility volatile organic compounds Air Filtered 10A 166 Travel blank B2B 166

High-volatility volatile organic compounds Air Filtered 10A 166 Lot blank B2C 166

High-volatility volatile organic compounds Air Filtered 10A 166 Laboratory blank B2D 172

Medium/low-volatility volatile 

organic compounds

Air Filtered 10B 166 Replicates B1B and B1C 11

Medium/low-volatility volatile 

organic compounds

Air Filtered 10B 166 Travel matrix spike B3A 36

Medium/low-volatility volatile 

organic compounds

Air Filtered 10B 166 Travel blank B3B 163

Medium/low-volatility volatile 

organic compounds

Air Filtered 10B 166 Lot blank B3C 166

Medium/low-volatility volatile 

organic compounds

Air Filtered 10B 166 Laboratory blank B3D 166

Polycyclic aromatic hydrocarbons Air Filtered 11B 144 Reagent spike B4A 14

Polycyclic aromatic hydrocarbons Air Filtered 11B 144 Laboratory blank B4B 17

Polycyclic aromatic hydrocarbons Air Filtered 11B 144 Field blank B4B 2

Pesticides (Airpest003 method) Air Filtered 12B 23 Reagent spike B5A 6

Pesticides (Airpest003 method) Air Filtered 12B 23 Blank B5B 6

Metals Air Filtered 13 142 Reagent spike B6A 10

Metals Air Filtered 13 142 Laboratory blank B6B 11

Metals Air Filtered 13 142 Field blank B6B 1

Metals Air Filtered 13 142 Field blank replicate B6C 1

Polycyclic aromatic hydrocarbons Sediment 14 15 Replicates C1 2

Organochlorine pesticides and 

polychlorinated biphenyl compounds

Sediment 15 8 Replicates C2 1

Metals Sediment 16 16 Matrix spike C3A 4

Metals Sediment 16 16 Replicates C3B and C3C 2
8 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

before it entered the treatment plant or SWR. Site LFDD 

monitored the quality of the water entering SWR from the 

watershed (fig. 2). During low flows, the water from site 

LFDD is diverted into the URDS ponds when water quality 

parameters are below certain criteria levels. Local urban runoff 

and the first flush from the Sweetwater River are also diverted 

into the URDS ponds to prevent contaminated water from 

entering the SWR.

In most cases, imported raw water was pumped directly 

from the pipeline into the treatment plant. Occasionally this 

water was pumped into SWR to augment the local supply. 

When imported raw water is pumped directly into the 

reservoir, it increases the water level; volume increases can be 

on the order of tens of thousands of acre-feet (Peter Baranov, 

Sweetwater Authority, oral commun., 2002). 

Baseline water sampling at SWR and LLR began in 

September 1998 and continued at 2-month intervals through 

September 1999. From October 1999 to December 2002, the 

sampling frequency was reduced to once every third month 

(quarterly). From December 2002 to April 2004, the sampling 

frequency was increased to every other month (bi-monthly). 

Starting July 2004, and thereafter, the sampling frequency 

was once every third month (quarterly). These sampling 

frequencies allowed monitoring of various operational modes 

of the reservoirs, such as recharge or drawdown events that 

substantially changed the water level in the reservoirs. The 

data showed the spatial variability in chemical occurrence and 

concentration in each of the two Sweetwater River reservoirs.

Before any reservoir water was sampled, depth profiles 

of dissolved oxygen, pH, specific conductance, and water 

temperature were measured at 1-m intervals from the 

surface to the bottom at each sampling location (table 3). 

Because LLR is much deeper than SWR, the depth-profile 

measurements at LLR below 10 m were collected every 2 m. 

If the temperature profile indicated a thermocline (thermal 

stratification), two sets of water samples were collected at the 

site—one at midepilimnion and one at midhypolimnion. The 

epilimnion is defined as the layer in a lake extending from the 

surface to a depth where photosynthesis no longer occurs and 

has an abrupt change in the slope of the temperature gradient. 

The hypolimnion is defined as the poorly illuminated lower 

region of a stratified lake where denser, colder water occurs 

and currents are minimal. The temperature of the hypolimnion 

is nearly uniform, and oxygen is depleted. This stratum of 

water is characterized by decay rather than by the production 

of organic matter. If no thermocline was evident, only one 

sample set was collected at a point midway between the water 

surface and the reservoir bottom.

Starting in January 2006, two sets of water samples were 

collected at each reservoir site; one sample was collected just 

below the water surface, and the other sample was collected 

either at the midepilimnion, if present, or a point midway 

between the water surface and the reservoir bottom.

Water Methods

Procedures for collecting and processing filtered and 

unfiltered water samples for chemical determinations were 

based on protocols outlined in the National Field Manual 

for the collection of water-quality data (U.S. Geological 

Survey, variously dated). Reservoir water samples for all 

analyses were collected by using a 1.2 L Teflon Kemmerer 

thief sampler (Wildco, Saginaw, Michigan) or were obtained 

as grab samples. The Kemmerer sampler was opened and 

lowered to the determined sampling depth; a weighted 

messenger was sent down to close the sampler. The closed 

sampler was then brought to the surface, and a drain plug 

at the bottom was opened to fill appropriate sample bottles. 

Samples that needed filtering were put into 1 L amber glass 

bottles and taken back to the Sweetwater Authority laboratory 

at the Purdue Treatment Plant (Sweetwater laboratory) for 

processing. These samples were filtered by pulling water from 

a 1 L glass bottle through a glass-fiber filter (GFF) by using 

Teflon tubing and a ceramic piston pump. Surface samples 

from SWR and LLR and samples from the treatment plant 

(sites SWR08 and SWR09) and site LFDD were collected 

by the grab method. Grab samples from the reservoirs or the 

Sweetwater River were collected by submerging the sample 

bottle, removing the cap, filling the bottle, and recapping the 

bottle while still submerged. The samples of finished (treated 

for drinking use) and imported raw water were collected by 

filling bottles from their appropriate spigots in the Perdue 

Treatment Plant. The finished water samples were not treated 

with dechlorinating reagent at the time of sample collection, 

and measured concentrations of some compounds in these 

samples could have been affected by chlorination. The water 

lines are continually running and were well flushed before the 

sample bottles were filled. All water samples were shipped on 

ice to the USGS National Water Quality Laboratory (NWQL), 

and the container temperature was measured and recorded 

upon arrival. The multi-parameter probe used to measure 

depth profiles was calibrated for specific conductance, pH, 

and dissolved oxygen at the Perdue Treatment Plant before 

sampling. The water temperature sensor is calibrated yearly at 

the USGS laboratory in San Diego.

Volatile Organic Compounds

Unfiltered water samples were analyzed for 87 VOCs 

on USGS NWQL schedule 2020 by purge and trap capillarycolumn, gas chromatography/mass spectrometry (GC/MS) 

operated in full-scan mode as described in Connor and others 

(1998). VOC samples were collected in vials at each site 

then processed in the Sweetwater laboratory by adding the 

appropriate amount of hydrochloric acid to lower the pH of the 

sample to less than 2 units.
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 9

Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:26 0.1 9.2 7.8 1,050 24.2

10/14/2003 13:27 1.0 8.8 8.2 1,070 23.2

10/14/2003 13:28 2.0 7.3 8.2 1,060 22.9

10/14/2003 13:29 3.0 6.9 8.2 1,080 22.8

10/14/2003 13:30 4.0 4.7 8.1 1,100 22.4

10/14/2003 13:31 5.0 4.0 8.1 1,110 22.4

10/14/2003 13:32 6.0 3.6 8.1 1,110 22.3

10/14/2003 13:33 7.0 3.3 8.1 1,110 22.3

10/14/2003 13:34 7.3 1.1 8.1 1,250 22.3

12/16/2003 11:56 0.1 10.3 6.8 983 14.7

12/16/2003 11:57 1.0 9.4 7.5 984 14.2

12/16/2003 11:58 2.0 8.8 7.3 989 13.7

12/16/2003 11:59 3.0 8.4 7.2 987 13.7

12/16/2003 12:00 4.0 8.2 7.9 985 13.6

12/16/2003 12:01 5.0 8.1 7.9 986 13.6

12/16/2003 12:02 6.0 8.0 8.1 986 13.6

12/16/2003 12:03 7.0 8.0 8.1 985 13.6

12/16/2003 12:04 8.0 7.8 8.2 986 13.6

12/16/2003 12:05 9.0 7.7 8.2 986 13.6

12/16/2003 12:06 9.5 2.1 7.9 1,050 13.8

02/17/2004 15:35 0.1 6.4 8.0 1,020 14.0

02/17/2004 15:36 1.0 6.5 8.0 1,010 13.8

02/17/2004 15:37 2.0 6.6 8.0 1,010 13.6

02/17/2004 15:38 3.0 6.5 8.0 1,010 13.6

02/17/2004 15:39 4.0 6.5 8.0 1,010 13.5

02/17/2004 15:40 5.0 6.5 8.0 1,010 13.4

02/17/2004 15:41 6.0 6.5 8.0 1,010 13.3

02/17/2004 15:42 7.0 6.5 8.0 1,020 13.3

02/17/2004 15:43 8.0 6.4 8.0 1,020 13.2

02/17/2004 15:44 9.0 6.3 8.0 1,020 13.2

02/17/2004 15:45 10.0 5.9 8.0 1,020 13.1

02/17/2004 15:46 11.0 5.5 8.0 1,020 13.1

02/17/2004 15:47 11.8 1.2 7.7 1,010 13.1

04/13/2004 11:18 0.1 11.0 8.5 988 21.7

04/13/2004 11:19 1.0 11.4 8.5 989 21.4

04/13/2004 11:20 2.0 11.4 8.5 998 21.3

04/13/2004 11:21 3.0 11.3 8.5 988 21.1

04/13/2004 11:22 4.0 11.1 8.5 987 20.8

04/13/2004 11:23 5.0 6.3 7.9 993 18.0

04/13/2004 11:24 6.0 2.6 7.7 990 17.3

04/13/2004 11:25 7.0 1.5 7.5 992 17.1

04/13/2004 11:26 8.0 0.9 7.5 996 16.6

04/13/2004 11:40 9.0 0.4 7.5 1,000 16.1

04/13/2004 11:27 10.0 0.2 7.4 1,000 15.7

04/13/2004 11:28 11.0 0.2 7.4 1,010 15.3

04/13/2004 11:29 12.0 0.2 7.4 1,010 15.0

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)—Continued

04/13/2004 11:30 13.0 0.2 7.7 1,120 15.1

07/13/2004 13:28 0.1 9.3 8.5 1,050 26.8

07/13/2004 13:29 1.0 9.3 8.6 1,050 26.1

07/13/2004 13:30 2.0 9.8 5.9 1,040 25.8

07/13/2004 13:31 3.0 9.2 8.4 1,050 25.6

07/13/2004 13:32 4.0 9.2 8.6 1,050 23.4

07/13/2004 13:33 5.0 2.2 8.1 1,030 23.1

07/13/2004 13:34 6.0 0.8 7.9 1,030 22.8

07/13/2004 13:20 7.0 0.5 7.8 1,030 22.5

07/13/2004 13:35 8.0 0.5 7.7 1,020 22.2

07/13/2004 13:36 9.0 0.5 7.6 1,020 21.7

07/13/2004 13:37 10.0 0.5 7.7 1,110 19.0

07/13/2004 13:38 10.4 0.4 7.8 1,240 19.1

10/12/2004 12:57 0.1 10.4 7.5 1,050 23.4

10/12/2004 12:58 1.0 8.8 7.9 1,050 22.8

10/12/2004 12:59 2.0 7.6 8.0 1,050 22.6

10/12/2004 13:00 3.0 7.1 8.0 1,050 22.5

10/12/2004 13:01 4.0 6.9 8.1 1,050 22.5

10/12/2004 13:02 5.0 6.7 8.1 1,050 22.5

10/12/2004 13:03 6.0 6.6 8.1 1,050 22.5

10/12/2004 13:04 6.6 0.8 8.1 1,170 22.1

01/12/2005 11:24 0.1 12.6 6.4 949 14.6

01/12/2005 11:25 1.0 12.3 6.5 953 14.4

01/12/2005 11:26 2.0 11.9 6.6 978 14.0

01/12/2005 11:27 3.0 11.1 6.7 970 13.5

01/12/2005 11:28 4.0 10.9 6.7 979 13.5

01/12/2005 11:29 5.0 10.6 6.8 985 13.4

01/12/2005 11:30 6.0 10.6 6.8 994 13.3

01/12/2005 11:31 7.0 10.6 6.8 995 13.3

01/12/2005 11:32 8.0 10.5 6.9 995 13.2

01/12/2005 11:33 9.0 10.4 6.9 996 13.2

01/12/2005 11:34 10.0 10.2 7.0 1,000 13.1

01/12/2005 11:35 11.8 3.7 6.8 1,030 13.3

04/12/2005 13:07 0.1 12.0 8.5 933 20.4

04/12/2005 13:08 1.0 12.2 8.3 931 19.6

04/12/2005 13:09 2.0 12.0 8.3 931 19.2

04/12/2005 13:10 3.0 10.8 8.3 932 19.1

04/12/2005 13:11 4.0 10.4 8.2 933 19.0

04/12/2005 13:12 5.0 9.9 8.2 933 18.9

04/12/2005 13:13 6.0 5.0 8.2 934 16.6

04/12/2005 13:14 7.0 2.0 8.1 944 15.8

04/12/2005 13:15 8.0 0.8 8.1 954 15.4

04/12/2005 13:16 9.0 0.7 8.0 958 15.2

04/12/2005 13:17 10.0 0.6 7.9 959 15.2

04/12/2005 13:18 12.0 0.6 7.8 963 15.2

04/12/2005 13:19 14.0 0.6 7.8 968 15.0
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

10 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)—Continued

04/12/2005 13:20 15.2 0.6 7.5 1,090 14.9

07/12/2005 10:58 0.1 8.7 8.6 1,020 25.5

07/12/2005 10:59 1.0 9.0 8.6 1,020 25.5

07/12/2005 11:00 2.0 9.2 8.7 1,020 25.2

07/12/2005 11:01 3.0 9.2 8.7 1,030 25.2

07/12/2005 11:02 4.0 9.1 8.7 1,030 25.0

07/12/2005 11:03 5.0 2.1 8.3 991 21.6

07/12/2005 11:04 6.0 0.7 8.1 982 21.0

07/12/2005 11:05 7.0 0.7 8.0 966 19.7

07/12/2005 11:06 8.0 0.6 7.9 961 19.1

07/12/2005 11:07 9.0 0.5 7.8 954 18.5

07/12/2005 11:08 10.0 0.5 7.7 950 17.5

07/12/2005 11:09 11.0 0.5 7.7 949 17.2

07/12/2005 11:10 12.0 0.4 7.7 950 16.9

07/12/2005 11:11 13.0 0.4 7.6 950 16.8

07/12/2005 11:12 14.0 0.4 7.6 987 16.7

10/11/2005 10:45 0.1 8.2 8.8 1,080 22.4

10/11/2005 10:46 1.0 8.2 8.6 1,080 22.1

10/11/2005 10:47 2.0 7.9 8.5 1,080 22.0

10/11/2005 10:48 3.0 7.6 8.4 1,080 21.9

10/11/2005 10:49 4.0 7.4 8.4 1,080 21.9

10/11/2005 10:50 5.0 7.2 8.4 1,080 21.8

10/11/2005 10:51 6.0 7.1 8.3 1,080 21.8

10/11/2005 10:52 7.0 7.0 8.3 1,080 21.8

10/11/2005 10:53 8.0 0.9 8.0 1,050 20.6

10/11/2005 10:54 9.0 0.7 8.0 1,030 20.1

10/11/2005 10:55 10.0 0.6 7.8 1,020 19.5

10/11/2005 10:56 10.6 0.6 7.7 1,260 19.0

01/10/2006 11:30 0.1 11.6 7.4 1,130 15.7

01/10/2006 11:17 1.0 10.6 7.3 1,140 14.4

01/10/2006 11:18 2.0 9.6 7.3 1,140 14.3

01/10/2006 11:19 3.0 9.5 7.3 1,140 14.2

01/10/2006 11:20 4.0 9.3 7.3 1,140 14.2

01/10/2006 11:21 5.0 8.8 7.3 1,140 14.2

01/10/2006 11:22 6.0 8.2 7.3 1,140 14.1

01/10/2006 11:23 7.0 8.0 7.3 1,130 14.1

01/10/2006 11:24 8.0 7.3 7.3 1,130 14.0

01/10/2006 11:25 9.0 7.1 7.2 1,130 14.0

01/10/2006 11:26 9.5 2.9 7.1 1,220 14.4

04/07/2006 11:30 0.1 9.7 8.1 894 17.2

04/07/2006 11:17 1.0 9.8 8.0 893 17.0

04/07/2006 11:18 2.0 8.1 8.1 893 16.9

04/07/2006 11:19 3.0 9.7 8.0 893 16.9

04/07/2006 11:20 4.0 9.6 8.1 893 16.9

04/07/2006 11:21 5.0 9.6 8.1 893 16.8

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)—Continued

04/07/2006 11:22 6.0 9.6 8.1 893 16.8

04/07/2006 11:23 7.0 9.3 8.1 890 16.6

04/07/2006 11:24 8.0 4.4 7.8 885 14.8

04/07/2006 11:25 9.0 2.9 7.7 886 14.8

04/07/2006 11:26 10.0 2.6 7.6 886 14.7

04/07/2006 11:27 12.0 2.4 7.6 886 14.7

04/07/2006 11:28 14.0 2.3 7.5 887 14.6

04/07/2006 11:29 14.7 1.3 7.5 908 14.7

07/11/2006 11:40 0.1 9.5 8.5 969 28.0

07/11/2006 11:29 1.0 9.1 8.6 969 27.7

07/11/2006 11:30 2.0 9.1 8.6 968 27.4

07/11/2006 11:31 3.0 9.0 8.6 968 27.2

07/11/2006 11:32 4.0 8.7 8.6 967 26.8

07/11/2006 11:33 5.0 3.1 7.7 943 23.0

07/11/2006 11:34 6.0 1.7 7.5 931 21.1

07/11/2006 11:35 7.0 1.6 7.5 925 20.1

07/11/2006 11:36 8.0 1.6 7.5 919 18.6

07/11/2006 11:37 9.0 1.7 7.5 915 18.0

07/11/2006 11:38 10.0 1.7 7.5 913 17.3

07/11/2006 11:39 11.0 1.7 7.5 913 17.0

07/11/2006 11:41 12.0 1.7 7.5 913 16.9

07/11/2006 11:42 13.1 1.7 8.0 915 16.8

08/22/2006 12:49 0.1 10.8 8.5 955 23.4

08/22/2006 12:50 1.0 10.1 8.5 953 26.2

08/22/2006 12:51 2.0 9.6 8.5 956 25.9

08/22/2006 12:52 3.0 9.2 8.5 956 25.8

08/22/2006 12:53 4.0 8.8 8.5 958 25.7

08/22/2006 12:54 5.0 5.1 8.1 953 24.6

10/11/2006 11:00 0.1 PM 7.7 984 22.2

10/11/2006 11:01 1.0 PM 8.3 987 21.9

10/11/2006 11:02 2.0 PM 8.2 988 21.8

10/11/2006 11:03 3.0 PM 8.3 988 21.7

10/11/2006 11:20 4.0 PM 8.3 988 21.6

10/11/2006 11:04 5.0 PM 8.3 988 21.6

10/11/2006 11:05 6.0 PM 8.3 988 21.6

10/11/2006 11:06 7.0 PM 8.3 989 21.6

10/11/2006 11:07 8.0 PM 8.0 956 19.8

10/11/2006 11:08 9.0 PM 7.8 953 19.6

10/11/2006 11:09 10.0 PM 7.5 949 19.3

10/11/2006 11:10 11.0 PM 7.4 1,150 18.1

01/09/2007 10:50 0.1 15.5 6.9 993 12.9

01/09/2007 10:36 1.0 15.8 7.6 995 12.6

01/09/2007 10:37 2.0 14.1 7.9 990 12.3

01/09/2007 10:38 3.0 12.9 7.9 990 12.2

01/09/2007 10:39 4.0 12.5 8.0 997 12.1
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 11

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)—Continued

01/09/2007 10:40 5.0 11.9 8.0 998 12.1

01/09/2007 10:41 6.0 11.6 8.0 999 12.1

01/09/2007 10:42 7.0 10.2 8.0 1,000 12.1

01/09/2007 10:43 8.0 9.5 8.0 1,000 12.1

01/09/2007 10:44 9.0 8.0 8.0 1,000 12.0

01/09/2007 10:45 10.0 6.5 7.9 1,000 12.2

01/09/2007 10:46 10.2 2.8 7.7 1,020 12.3

04/10/2007 11:30 0.1 11.0 6.8 1,040 19.4

04/10/2007 11:38 1.0 10.6 7.2 1,040 18.9

04/10/2007 11:39 2.0 10.3 7.4 1,040 18.6

04/10/2007 11:40 3.0 10.1 7.5 1,050 18.2

04/10/2007 11:41 4.0 10.0 7.6 1,040 18.1

04/10/2007 11:42 5.0 9.9 7.7 1,040 18.1

04/10/2007 11:43 6.0 5.0 7.5 1,060 17.0

04/10/2007 11:44 7.0 3.4 7.5 1,060 16.4

04/10/2007 11:45 8.0 2.4 7.4 1,060 15.8

04/10/2007 11:46 9.0 1.5 7.4 1,060 15.5

04/10/2007 11:47 10.0 1.2 7.3 1,060 15.3

04/10/2007 11:48 11.0 1.1 7.3 1,190 15.0

07/10/2007 10:30 0.1 6.9 7.4 1,050 25.6

07/10/2007 10:38 1.0 7.1 7.6 1,060 25.6

07/10/2007 10:39 2.0 7.1 7.7 1,060 25.4

07/10/2007 10:40 3.0 7.2 7.7 1,060 25.4

07/10/2007 10:41 4.0 7.2 7.8 1,060 25.3

07/10/2007 10:42 5.0 7.2 7.8 1,060 25.2

07/10/2007 10:43 6.0 1.6 7.4 1,080 22.2

07/10/2007 10:44 7.0 1.6 7.4 1,080 21.9

07/10/2007 10:45 8.0 1.6 7.4 1,090 21.5

07/10/2007 10:46 9.0 1.5 7.4 1,090 21.2

07/10/2007 10:47 10.0 1.6 7.3 1,100 19.4

07/10/2007 10:48 10.8 1.5 7.4 1,160 19.1

10/09/2007 11:30 0.1 10.1 6.6 1,100 21.6

10/09/2007 11:31 1.0 9.0 6.8 1,100 20.8

10/09/2007 11:32 2.0 8.4 6.9 1,100 20.6

10/09/2007 11:40 3.0 7.7 7.0 1,100 20.6

10/09/2007 11:33 4.0 7.3 7.1 1,100 20.5

10/09/2007 11:34 5.0 6.8 7.1 1,100 20.5

10/09/2007 11:35 6.0 6.5 7.2 1,100 20.5

10/09/2007 11:36 6.5 2.2 7.0 1,220 20.6

10/25/2007 12:30 0.1 17.4 8.5 1,100 20.2

01/08/2008 10:30 0.1 11.3 8.2 1,150 12.6

01/08/2008 10:31 1.0 11.4 8.2 1,150 12.3

01/08/2008 10:32 2.0 10.7 8.1 1,150 12.3

01/08/2008 10:33 3.0 9.8 8.1 1,150 12.2

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)—Continued

01/08/2008 10:45 4.0 9.6 8.0 1,140 12.2

01/08/2008 10:34 5.0 9.4 7.9 1,140 12.2

01/08/2008 10:35 6.0 8.8 8.0 1,140 12.1

01/08/2008 10:36 7.0 8.6 7.9 1,140 12.1

01/08/2008 10:37 7.4 5.1 7.8 1,140 12.2

04/15/2008 11:30 0.1 12.0 8.6 856 19.9

04/15/2008 11:31 1.0 12.0 8.5 855 19.7

04/15/2008 11:32 2.0 12.0 8.5 856 19.7

04/15/2008 11:33 3.0 11.8 8.4 853 19.4

04/15/2008 11:34 4.0 11.6 8.4 852 19.4

04/15/2008 11:35 5.0 9.3 8.3 837 18.2

04/15/2008 11:36 6.0 5.3 8.1 836 16.9

04/15/2008 11:37 7.0 2.8 8.0 829 16.3

04/15/2008 11:38 8.0 1.5 8.0 825 15.6

04/15/2008 11:39 9.0 1.1 7.9 822 15.3

04/15/2008 11:40 10.0 0.9 7.9 821 15.1

04/15/2008 11:41 11.0 0.9 7.8 819 14.9

04/15/2008 11:42 12.0 0.9 7.8 853 14.8

04/15/2008 11:43 12.2 0.8 7.8 852 14.8

07/15/2008 10:30 0.1 8.2 8.7 1,100 26.2

07/15/2008 10:31 1.0 8.7 8.2 1,100 26.0

07/15/2008 10:32 2.0 8.7 8.2 1,100 25.8

07/15/2008 10:33 3.0 8.6 8.2 1,100 25.6

07/15/2008 10:34 4.0 8.4 8.1 1,100 25.5

07/15/2008 10:35 5.0 3.1 7.8 1,080 21.8

07/15/2008 10:36 6.0 1.4 7.7 1,070 20.7

07/15/2008 10:37 7.0 1.3 7.6 1,070 19.7

07/15/2008 10:38 8.0 1.3 7.5 1,060 18.9

07/15/2008 10:39 9.0 1.3 7.5 1,050 17.6

07/15/2008 10:40 10.0 1.3 7.4 1,050 17.3

07/15/2008 10:41 10.8 1.5 7.3 1,270 17.3

10/14/2008 12:20 0.1 8.9 7.1 1,150 22.4

10/14/2008 12:21 1.0 6.5 7.0 1,150 22.1

10/14/2008 12:22 2.0 5.5 7.0 1,150 22.0

10/14/2008 12:23 3.0 5.0 7.0 1,150 21.9

10/14/2008 12:24 4.0 4.1 7.0 1,150 21.9

10/14/2008 12:25 5.0 3.7 7.0 1,150 21.8

10/14/2008 12:26 5.8 1.9 7.0 1,230 21.8

01/13/2009 11:10 0.1 15.8 7.2 1,080 14.8

01/13/2009 11:11 1.0 16.4 7.3 1,080 13.6

01/13/2009 11:12 2.0 15.1 7.3 1,080 13.4

01/13/2009 11:13 3.0 13.3 7.3 1,070 12.8

01/13/2009 11:14 4.0 12.2 7.3 1,070 12.8

01/13/2009 11:15 5.0 5.0 7.2 1,080 12.3
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

12 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir near pump tower (SWR01)—Continued

01/13/2009 11:16 6.0 4.5 7.1 1,080 12.2

01/13/2009 11:17 7.0 4.1 7.1 1,080 12.2

01/13/2009 11:18 8.0 4.0 7.1 1,080 12.2

01/13/2009 11:19 9.0 3.7 7.1 1,080 12.2

01/13/2009 11:20 9.2 2.5 7.0 1,040 12.4

04/14/2009 11:50 0.1 9.9 8.0 1,060 18.5

04/14/2009 11:51 1.0 9.8 8.1 1,060 18.5

04/14/2009 11:52 2.0 8.8 8.1 1,060 18.3

04/14/2009 11:53 3.0 8.5 8.1 1,060 18.2

04/14/2009 11:54 4.0 8.4 8.1 1,060 18.2

04/14/2009 11:55 5.0 8.1 8.1 1,070 18.1

04/14/2009 11:56 6.0 6.8 8.0 1,050 17.5

04/14/2009 11:57 7.0 5.4 7.8 1,060 16.9

04/14/2009 11:58 8.0 4.2 7.7 1,060 16.8

04/14/2009 11:59 9.0 3.5 7.7 1,060 16.7

04/14/2009 12:00 10.0 3.1 7.6 1,060 16.6

07/07/2009 10:40 0.1 10.7 7.8 1,020 24.9

07/07/2009 10:41 1.0 10.7 8.2 1,060 24.9

07/07/2009 10:42 2.0 11.1 8.4 1,150 24.9

07/07/2009 10:43 3.0 11.3 8.5 1,150 24.8

07/07/2009 10:44 4.0 11.0 8.5 1,140 24.8

07/07/2009 10:45 5.0 10.6 8.5 1,120 24.6

07/07/2009 10:46 6.0 2.1 7.7 1,140 22.4

07/07/2009 10:47 7.0 1.6 7.7 1,130 21.9

07/07/2009 10:48 8.0 1.3 7.6 1,110 21.6

07/07/2009 10:49 9.0 1.3 7.6 1,110 21.2

07/07/2009 10:50 10.0 1.3 7.7 1,130 20.9

07/07/2009 10:51 10.8 1.3 7.7 1,160 20.3

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:06 0.1 10.6 8.8 1,080 23.8

10/14/2003 14:07 1.0 9.7 8.8 1,090 23.6

10/14/2003 14:08 2.0 8.1 8.7 1,100 23.0

10/14/2003 14:09 3.0 7.5 8.6 1,100 22.8

10/14/2003 14:10 4.0 6.9 8.6 1,100 22.6

10/14/2003 14:11 5.0 6.5 8.5 1,110 22.5

10/14/2003 14:12 6.0 5.1 8.5 1,110 22.4

10/14/2003 14:13 7.0 3.5 8.4 1,110 22.3

10/14/2003 14:14 8.0 3.1 8.3 1,110 22.3

10/14/2003 14:15 8.5 3.1 8.3 1,120 22.3

12/16/2003 12:56 0.1 9.5 8.4 956 14.9

12/16/2003 12:57 1.0 8.0 8.4 962 14.0

12/16/2003 12:58 2.0 7.9 8.4 967 13.7

12/16/2003 12:59 3.0 8.0 8.4 979 13.6

12/16/2003 13:00 4.0 7.9 8.3 981 13.6

12/16/2003 13:01 5.0 8.0 8.3 981 13.5

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

12/16/2003 13:02 6.0 7.9 8.3 981 13.5

12/16/2003 13:03 7.0 7.9 8.3 981 13.5

12/16/2003 13:04 8.0 7.9 8.3 982 13.4

12/16/2003 13:05 9.0 7.7 8.3 982 13.4

12/16/2003 13:06 9.5 7.4 8.3 983 13.4

02/17/2004 16:34 0.1 6.6 8.1 1,020 14.4

02/17/2004 16:35 1.0 6.4 8.0 1,020 14.4

02/17/2004 16:36 2.0 6.3 8.0 1,020 13.8

02/17/2004 16:37 3.0 6.3 8.0 1,020 13.6

02/17/2004 16:38 4.0 6.3 8.0 1,020 13.4

02/17/2004 16:39 5.0 6.3 8.0 1,020 13.3

02/17/2004 16:40 6.0 6.3 8.0 1,010 13.1

02/17/2004 16:41 7.0 5.8 8.0 1,020 12.9

02/17/2004 16:42 8.0 5.5 7.9 1,020 12.9

02/17/2004 16:43 9.0 5.3 7.9 1,020 12.9

02/17/2004 16:44 10.0 5.3 7.9 1,020 12.9

02/17/2004 16:45 11.0 5.0 7.9 1,020 12.9

02/17/2004 16:46 12.0 4.6 7.8 1,020 12.9

02/17/2004 16:47 12.3 0.8 7.7 1,020 12.9

04/13/2004 12:08 0.1 11.2 8.6 992 22.1

04/13/2004 12:09 1.0 11.6 8.6 992 21.6

04/13/2004 12:10 2.0 11.6 8.6 987 21.3

04/13/2004 12:11 3.0 11.3 8.6 983 21.0

04/13/2004 12:12 4.0 11.2 8.6 987 20.8

04/13/2004 12:13 5.0 7.5 8.0 983 18.7

04/13/2004 12:14 6.0 4.8 7.8 986 17.9

04/13/2004 12:15 7.0 2.8 7.7 992 17.2

04/13/2004 12:20 8.0 1.0 7.5 996 16.6

04/13/2004 12:16 9.0 0.5 7.5 998 16.4

04/13/2004 12:17 10.0 0.3 7.5 1,010 15.5

04/13/2004 12:18 11.0 0.2 7.4 1,010 15.2

04/13/2004 12:19 12.0 0.2 7.4 1,010 15.1

04/13/2004 12:22 13.0 0.2 7.4 1,010 14.9

04/13/2004 12:23 13.8 0.2 7.4 1,010 14.9

07/13/2004 13:54 0.1 10.3 8.4 1,040 26.5

07/13/2004 13:55 1.0 10.2 8.5 1,040 26.5

07/13/2004 13:56 2.0 10.2 8.5 1,050 26.4

07/13/2004 13:57 3.0 9.9 8.5 1,040 25.8

07/13/2004 13:58 4.0 6.3 8.3 1,040 24.3

07/13/2004 13:59 5.0 4.0 8.1 1,040 23.7

07/13/2004 14:00 6.0 2.4 7.9 1,030 23.2

07/13/2004 14:01 7.0 0.9 7.8 1,030 22.7

07/13/2004 14:02 8.0 0.7 7.7 1,020 21.6

07/13/2004 14:03 9.0 0.6 7.7 1,020 20.7

07/13/2004 14:04 10.0 0.6 7.6 1,020 19.3
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 13

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

07/13/2004 14:05 11.0 0.6 7.5 1,020 18.0

07/13/2004 14:06 12.0 0.5 7.4 1,020 17.6

07/13/2004 14:07 12.6 0.5 7.3 1,020 17.5

10/12/2004 13:35 0.1 9.0 8.4 1,040 23.1

10/12/2004 13:36 1.0 8.9 8.5 1,040 23.1

10/12/2004 13:37 2.0 8.3 8.4 1,050 23.0

10/12/2004 13:38 3.0 6.6 8.3 1,050 22.5

10/12/2004 13:39 4.0 6.0 8.3 1,060 22.4

10/12/2004 13:40 5.0 5.7 8.3 1,060 22.4

10/12/2004 13:41 6.0 5.6 8.2 1,060 22.4

10/12/2004 13:42 7.0 5.6 8.2 1,060 22.3

10/12/2004 13:43 8.0 5.2 8.2 1,060 22.2

10/12/2004 13:44 9.0 4.3 8.2 1,060 22.2

10/12/2004 13:45 9.2 1.6 7.9 1,080 22.1

01/12/2005 12:03 0.1 13.4 7.4 884 15.6

01/12/2005 12:04 1.0 11.2 7.5 922 13.5

01/12/2005 12:05 2.0 9.7 7.5 972 13.1

01/12/2005 12:06 3.0 9.4 7.5 986 13.1

01/12/2005 12:07 4.0 9.3 7.5 993 13.2

01/12/2005 12:08 5.0 9.3 7.4 1,000 13.1

01/12/2005 12:09 6.0 9.3 7.5 1,000 13.1

01/12/2005 12:10 7.0 9.4 7.5 1,010 13.1

01/12/2005 12:11 8.0 9.3 7.5 1,010 13.0

01/12/2005 12:12 9.0 9.2 7.5 1,010 12.9

01/12/2005 12:13 10.0 9.2 7.5 1,010 12.9

01/12/2005 12:14 12.0 8.5 7.5 1,020 12.8

01/12/2005 12:15 13.4 7.2 7.4 1,010 12.7

04/12/2005 13:32 0.1 13.3 8.6 932 20.9

04/12/2005 13:33 1.0 13.3 8.6 933 20.7

04/12/2005 13:34 2.0 12.5 8.6 934 20.1

04/12/2005 13:35 3.0 10.8 5.6 934 19.2

04/12/2005 13:36 4.0 9.7 8.5 932 18.8

04/12/2005 13:37 5.0 7.1 8.5 934 17.7

04/12/2005 13:38 6.0 4.6 8.4 928 17.5

04/12/2005 13:39 7.0 1.9 8.3 924 16.3

04/12/2005 13:40 8.0 1.0 8.3 946 15.8

04/12/2005 13:41 9.0 0.8 8.2 949 15.6

04/12/2005 13:42 10.0 0.6 8.2 952 15.5

04/12/2005 13:43 12.0 0.6 8.2 971 15.0

04/12/2005 13:44 14.0 0.6 8.1 977 14.8

04/12/2005 13:45 16.0 0.6 8.1 972 14.8

07/12/2005 11:48 0.1 9.2 8.8 1,030 26.1

07/12/2005 11:49 1.0 9.3 8.8 1,030 26.1

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

07/12/2005 11:50 2.0 9.3 8.8 1,030 25.5

07/12/2005 11:51 3.0 9.1 8.8 1,020 25.0

07/12/2005 11:52 4.0 6.9 8.7 1,020 24.6

07/12/2005 11:53 5.0 1.9 8.4 1,000 22.6

07/12/2005 11:54 6.0 0.8 8.3 990 21.2

07/12/2005 11:55 7.0 0.6 8.1 968 19.9

07/12/2005 11:56 8.0 0.6 8.0 962 19.2

07/12/2005 11:57 9.0 0.5 7.9 952 18.1

07/12/2005 11:58 10.0 0.5 7.8 949 17.6

07/12/2005 11:59 11.0 0.5 7.8 948 17.4

07/12/2005 12:00 12.0 0.5 7.8 947 17.0

07/12/2005 12:01 13.0 0.4 7.7 949 16.8

07/12/2005 12:02 14.0 0.4 7.7 949 16.7

07/12/2005 12:03 15.0 0.4 7.6 950 16.6

10/11/2005 11:24 0.1 9.0 8.4 1,080 22.6

10/11/2005 11:25 1.0 8.1 8.3 1,080 22.1

10/11/2005 11:26 2.0 7.7 8.3 1,080 21.9

10/11/2005 11:27 3.0 7.4 8.3 1,080 21.9

10/11/2005 11:28 4.0 7.2 8.3 1,080 21.8

10/11/2005 11:29 5.0 7.1 8.3 1,080 21.8

10/11/2005 11:30 6.0 7.0 8.3 1,080 21.7

10/11/2005 11:31 7.0 6.2 8.3 1,080 21.4

10/11/2005 11:32 8.0 2.2 8.2 1,060 20.9

10/11/2005 11:33 9.0 1.1 8.0 1,050 20.6

10/11/2005 11:34 10.0 0.7 7.9 1,010 19.3

10/11/2005 11:35 12.0 0.6 7.8 987 18.0

10/11/2005 11:36 12.5 0.5 7.6 978 17.9

01/10/2006 12:10 0.1 13.9 8.0 1,130 14.8

01/10/2006 11:56 1.0 11.5 7.9 1,130 14.3

01/10/2006 11:57 2.0 10.2 7.8 1,140 14.2

01/10/2006 11:58 3.0 9.6 7.8 1,140 14.2

01/10/2006 11:59 4.0 9.2 7.8 1,140 14.2

01/10/2006 12:00 5.0 9.1 7.8 1,140 14.2

01/10/2006 12:01 6.0 8.9 7.7 1,140 14.2

01/10/2006 12:02 7.0 8.5 7.8 1,140 14.2

01/10/2006 12:03 8.0 7.9 7.7 1,140 14.0

01/10/2006 12:04 9.0 7.0 7.7 1,150 14.0

01/10/2006 12:05 10.0 6.4 7.5 1,150 13.9

01/10/2006 12:06 11.4 5.3 7.6 1,150 13.9

04/07/2006 12:00 0.1 9.9 8.1 893 17.2

04/07/2006 11:47 1.0 10.0 8.1 893 17.2

04/07/2006 11:48 2.0 10.0 8.1 893 17.2

04/07/2006 11:49 3.0 9.8 8.1 893 16.9

04/07/2006 11:50 4.0 9.6 8.1 892 16.7
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

14 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

04/07/2006 11:51 5.0 9.3 8.1 891 16.6

04/07/2006 11:52 6.0 9.2 8.1 891 16.6

04/07/2006 11:53 7.0 9.1 8.1 891 16.6

04/07/2006 11:54 8.0 6.6 8.0 886 15.4

04/07/2006 11:55 9.0 7.8 7.9 886 15.0

04/07/2006 11:56 10.0 4.1 7.8 885 15.0

04/07/2006 11:57 12.0 3.1 7.8 886 14.7

04/07/2006 11:58 14.0 2.2 7.7 886 14.6

04/07/2006 11:59 16.0 1.6 7.6 887 14.6

07/11/2006 12:10 0.1 9.9 8.6 958 28.2

07/11/2006 11:58 1.0 9.2 8.6 962 27.6

07/11/2006 11:59 2.0 8.8 8.6 962 27.2

07/11/2006 12:00 3.0 8.6 8.6 961 27.0

07/11/2006 12:01 4.0 8.1 8.6 961 26.8

07/11/2006 12:02 5.0 1.5 7.7 940 23.7

07/11/2006 12:03 6.0 1.4 7.6 925 20.8

07/11/2006 12:04 7.0 1.4 7.5 917 20.0

07/11/2006 12:05 8.0 1.4 7.5 909 18.7

07/11/2006 12:06 9.0 1.4 7.5 903 17.9

07/11/2006 12:07 10.0 1.4 7.5 901 17.3

07/11/2006 12:08 12.0 1.4 7.5 901 16.9

07/11/2006 12:09 14.0 1.4 7.5 903 16.6

07/11/2006 12:11 15.1 1.4 7.5 904 16.6

08/23/2006 09:49 0.1 9.6 8.5 955 26.4

08/23/2006 09:50 1.0 9.8 8.5 954 26.2

08/23/2006 09:51 2.0 9.1 8.5 953 26.0

08/23/2006 09:52 3.0 9.0 8.5 954 26.0

08/23/2006 09:53 4.0 8.2 8.4 950 25.6

08/23/2006 09:54 5.0 4.2 7.9 945 24.4

10/11/2006 11:30 0.1 PM 8.5 985 21.9

10/11/2006 11:31 1.0 PM 8.5 985 21.9

10/11/2006 11:32 2.0 PM 8.4 987 21.8

10/11/2006 11:33 3.0 PM 8.4 987 21.7

10/11/2006 11:50 4.0 PM 8.4 987 21.6

10/11/2006 11:34 5.0 PM 8.4 987 21.5

10/11/2006 11:35 6.0 PM 8.3 986 21.4

10/11/2006 11:36 7.0 PM 8.3 986 21.4

10/11/2006 11:37 8.0 PM 8.1 972 20.6

10/11/2006 11:38 9.0 PM 7.9 965 20.3

10/11/2006 11:39 10.0 PM 7.6 938 18.6

10/11/2006 11:40 11.0 PM 7.5 933 18.2

10/11/2006 11:41 11.8 PM 7.4 936 17.5

01/09/2007 11:20 0.1 14.6 8.3 1,000 12.7

01/09/2007 11:06 1.0 13.8 8.3 1,000 12.4

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

01/09/2007 11:07 2.0 13.0 8.3 1,000 12.3

01/09/2007 11:08 3.0 12.7 8.3 1,000 12.2

01/09/2007 11:09 4.0 11.7 8.2 1,000 12.1

01/09/2007 11:10 5.0 11.3 8.2 1,000 12.1

01/09/2007 11:11 6.0 11.1 8.2 1,000 12.1

01/09/2007 11:12 7.0 10.7 8.2 1,000 12.1

01/09/2007 11:13 8.0 10.0 8.1 1,010 12.0

01/09/2007 11:14 9.0 9.2 8.1 1,010 12.0

01/09/2007 11:15 10.0 8.9 8.0 1,000 12.0

01/09/2007 11:16 11.0 7.4 7.9 1,000 12.1

01/09/2007 11:17 11.3 5.1 7.9 1,000 12.1

04/10/2007 12:00 0.1 10.4 8.2 1,040 19.1

04/10/2007 12:08 1.0 10.2 8.2 1,040 18.6

04/10/2007 12:09 2.0 10.0 8.2 1,040 18.3

04/10/2007 12:10 3.0 9.8 8.2 1,030 18.2

04/10/2007 12:11 4.0 9.5 8.1 1,030 18.1

04/10/2007 12:12 5.0 9.3 8.1 1,040 18.0

04/10/2007 12:13 6.0 4.5 7.8 1,050 17.2

04/10/2007 12:14 7.0 2.8 7.7 1,050 16.4

04/10/2007 12:15 8.0 2.1 7.6 1,050 16.2

04/10/2007 12:16 9.0 1.3 7.5 1,050 15.7

04/10/2007 12:17 10.0 1.1 7.5 1,060 15.1

04/10/2007 12:18 11.0 1.0 7.5 1,060 15.1

04/10/2007 12:19 12.0 0.9 7.5 1,060 14.9

04/10/2007 12:20 12.2 0.9 7.4 1,060 14.9

07/10/2007 11:10 0.1 8.5 8.0 1,050 25.9

07/10/2007 11:18 1.0 8.5 8.5 1,050 25.9

07/10/2007 11:19 2.0 8.3 8.3 1,050 25.6

07/10/2007 11:20 3.0 8.1 8.1 1,050 25.5

07/10/2007 11:21 4.0 7.8 8.0 1,050 25.3

07/10/2007 11:22 5.0 6.2 8.0 1,050 24.8

07/10/2007 11:23 6.0 2.0 7.8 1,070 23.3

07/10/2007 11:24 7.0 1.7 7.7 1,080 21.9

07/10/2007 11:25 8.0 1.7 7.6 1,080 21.3

07/10/2007 11:26 9.0 1.8 7.6 1,090 20.1

07/10/2007 11:27 10.0 1.8 7.4 1,090 19.8

07/10/2007 11:28 11.0 1.8 7.3 1,090 19.4

07/10/2007 11:29 12.0 1.8 7.3 1,090 19.1

07/10/2007 11:30 13.1 1.8 7.4 1,100 18.7

10/09/2007 12:10 0.1 10.9 7.8 1,080 21.4

10/09/2007 12:11 1.0 10.1 7.8 1,080 21.1

10/09/2007 12:12 2.0 8.7 7.8 1,080 20.6

10/09/2007 12:13 3.0 8.1 7.8 1,080 20.6

10/09/2007 12:14 4.0 7.5 7.8 1,080 20.6

10/09/2007 12:20 5.0 7.2 7.8 1,080 20.6
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 15

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

10/09/2007 12:15 6.0 6.9 7.8 1,080 20.5

10/09/2007 12:16 7.0 6.6 7.8 1,080 20.5

10/09/2007 12:17 8.0 6.4 7.8 1,080 20.4

10/09/2007 12:18 9.0 6.3 7.8 1,080 20.4

10/09/2007 12:19 9.6 3.3 7.5 1,100 20.4

10/25/2007 12:40 0.1 15.1 8.3 1,100 20.1

01/08/2008 11:10 0.1 10.9 8.0 1,150 12.9

01/08/2008 11:11 1.0 10.1 7.9 1,150 12.3

01/08/2008 11:12 2.0 9.1 7.9 1,150 12.2

01/08/2008 11:13 3.0 8.9 7.9 1,150 12.2

01/08/2008 11:14 4.0 8.8 7.9 1,150 12.2

01/08/2008 11:20 5.0 8.8 7.9 1,150 12.2

01/08/2008 11:15 6.0 8.8 7.9 1,150 12.2

01/08/2008 11:16 7.0 8.7 8 1,150 12.2

01/08/2008 11:17 8.0 8.7 7.9 1,150 12.2

01/08/2008 11:18 9.0 8.4 7.9 1,150 12.2

01/08/2008 11:19 9.3 3.7 7.8 1,150 12.2

04/15/2008 12:10 0.1 12.3 8.4 825 19.9

04/15/2008 12:11 1.0 12.2 8.4 826 19.8

04/15/2008 12:12 2.0 12 8.4 826 19.8

04/15/2008 12:13 3.0 11.5 8.4 827 19.2

04/15/2008 12:14 4.0 11.2 8.3 826 18.9

04/15/2008 12:15 5.0 8.9 8.2 824 18.2

04/15/2008 12:16 6.0 6.8 8.1 818 12.6

04/15/2008 12:17 7.0 3.9 8.0 808 16.3

04/15/2008 12:18 8.0 2.2 8.0 801 15.6

04/15/2008 12:19 9.0 1.3 7.9 798 15.3

04/15/2008 12:20 10.0 1.0 7.9 797 15.1

04/15/2008 12:21 11.0 0.9 7.8 795 14.8

04/15/2008 12:22 12.0 0.9 7.8 794 14.6

04/15/2008 12:23 13.0 0.8 7.8 793 14.5

04/15/2008 12:24 13.6 0.8 7.8 792 14.4

07/15/2008 11:10 0.1 9.0 8.3 1,100 26.6

07/15/2008 11:11 1.0 9.0 8.2 1,100 26.5

07/15/2008 11:12 2.0 8.8 8.2 1,100 26.0

07/15/2008 11:13 3.0 8.7 8.2 1,100 25.6

07/15/2008 11:14 4.0 6.3 8.1 1,090 24.5

07/15/2008 11:15 5.0 1.9 7.8 1,080 23.1

07/15/2008 11:16 6.0 1.2 7.6 1,060 20.4

07/15/2008 11:17 7.0 1.2 7.5 1,060 19.0

07/15/2008 11:18 8.0 1.2 7.5 1,050 18.4

07/15/2008 11:19 9.0 1.2 7.4 1,050 17.9

07/15/2008 11:20 10.0 1.2 7.4 1,050 17.5

07/15/2008 11:21 11.0 1.2 7.3 1,050 17.3

07/15/2008 11:22 11.9 1.3 7.2 1,060 17.2

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

10/14/2008 13:00 0.1 9.9 7.3 1,130 21.0

10/14/2008 13:01 1.0 7.8 7.3 1,130 20.9

10/14/2008 13:02 2.0 6.7 7.3 1,130 20.7

10/14/2008 13:03 3.0 6.0 7.3 1,130 20.5

10/14/2008 13:04 4.0 5.7 7.4 1,130 20.5

10/14/2008 13:05 5.0 5.2 7.4 1,130 20.4

10/14/2008 13:06 6.0 5.1 7.4 1,130 20.4

10/14/2008 13:07 7.0 4.3 7.4 1,130 20.4

10/14/2008 13:08 8.0 4.0 7.3 1,130 20.2

10/14/2008 13:09 8.7 1.8 7.2 1,130 19.7

01/13/2009 11:50 0.1 15.8 7.6 1,080 14.4

01/13/2009 11:51 1.0 15.1 7.6 1,080 13.2

01/13/2009 11:52 2.0 13.4 7.6 1,080 13.1

01/13/2009 11:53 3.0 11.7 7.6 1,080 12.8

01/13/2009 11:54 4.0 10.7 7.5 1,080 12.7

01/13/2009 11:55 5.0 9.5 7.5 1,080 12.5

01/13/2009 11:56 6.0 8.7 7.5 1,080 12.4

01/13/2009 11:57 7.0 7.4 7.5 1,080 12.3

01/13/2009 11:58 8.0 6.0 7.4 1,080 12.2

01/13/2009 11:59 9.0 3.9 7.3 1,080 12.2

01/13/2009 12:00 10.0 3.4 7.3 1,080 12.3

01/13/2009 12:01 10.7 1.6 7.3 1,080 12.3

04/14/2009 12:20 0.1 8.1 8.2 1,060 18.4

04/14/2009 12:21 1.0 7.0 8.2 1,060 18.4

04/14/2009 12:22 2.0 7.0 8.2 1,060 18.4

04/14/2009 12:23 3.0 7.0 8.2 1,060 18.3

04/14/2009 12:24 4.0 6.9 8.2 1,060 18.3

04/14/2009 12:25 5.0 6.9 8.1 1,060 17.9

04/14/2009 12:26 6.0 6.8 8.1 1,060 17.8

04/14/2009 12:27 7.0 6.5 8 1,050 17.5

04/14/2009 12:28 8.0 5.6 7.9 1,050 17.3

04/14/2009 12:29 9.0 5.2 7.9 1,050 17.2

04/14/2009 12:30 10.0 4.2 7.8 1,050 16.9

04/14/2009 12:31 11.0 3.1 7.6 1,050 16.4

04/14/2009 12:32 12.0 1.8 7.6 1,040 16.2

04/14/2009 12:33 12.7 1.4 7.6 1,040 16.1

07/07/2009 11:30 0.01 10.9 8.5 1,040 25.6

07/07/2009 11:31 1.0 10.8 8.6 1,040 25.6

07/07/2009 11:32 2.0 10.9 8.6 1,040 25.5

07/07/2009 11:33 3.0 11.0 8.6 1,040 25.0

07/07/2009 11:34 4.0 10.7 8.5 1,030 24.8

07/07/2009 11:35 5.0 8.0 8.2 1,030 23.6

07/07/2009 11:36 6.0 4.2 8.0 1,030 22.9

07/07/2009 11:37 7.0 2.3 7.8 1,020 22.2

07/07/2009 11:38 8.0 1.5 7.7 1,020 21.6
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

16 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

07/07/2009 11:39 9.0 1.2 7.7 1,020 21.6

07/07/2009 11:40 10.0 1.3 7.6 1,010 20.5

07/07/2009 11:41 11.0 1.2 7.6 1,010 20.0

07/07/2009 11:42 12.0 1.2 7.6 1,000 19.6

07/07/2009 11:43 12.5 1.2 7.5 1,000 19.5

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:00 0.2 11.0 9.0 1,110 25.1

10/14/2003 15:01 1.0 10.7 8.9 1,110 24.8

12/16/2003 13:30 0.5 12.8 9.0 966 14.4

10/14/2003 13:31 1.0 12.4 8.9 989 13.5

02/17/2004 17:00 0.2 6.7 8.0 1,020 15.6

10/14/2003 17:01 0.6 6.4 8.0 1,020 15.6

04/13/2004 12:39 0.1 10.6 8.5 1,010 22.6

04/13/2004 12:40 1.0 10.8 8.5 1,010 22.6

04/13/2004 12:41 2.0 10.2 8.4 1,020 22.1

04/13/2004 12:42 2.3 8.7 8.1 1,000 20.6

07/13/2004 14:30 0.1 9.1 8.5 1,070 30.0

07/13/2004 14:31 0.3 9.2 8.6 1,070 29.9

10/12/2004 14:00 0.1 17.1 9.1 1,060 25.1

07/13/2004 14:01 0.2 17.2 9.2 1,060 25.1

01/12/2005 12:30 0.1 9.3 7.7 552 14.8

07/13/2004 12:31 0.9 8.3 7.6 506 12.2

04/12/2005 14:28 0.1 11.1 8.6 959 20.9

04/12/2005 14:29 1.0 11.1 8.6 960 20.9

04/12/2005 14:30 2.0 11.0 8.6 965 20.9

04/12/2005 14:31 3.0 7.1 8.5 1,010 19.6

04/12/2005 14:32 3.7 5.4 8.4 968 18.5

07/12/2005 12:29 0.1 9.1 8.8 1,040 26.7

07/12/2005 12:30 1.0 8.8 8.8 1,040 26.5

07/12/2005 12:31 2.0 6.7 8.7 1,060 25.7

07/12/2005 12:32 2.5 5.3 8.6 1,060 25.6

10/11/2005 12:09 0.1 8.5 8.5 1,080 22.8

10/11/2005 12:10 1.0 8.0 8.4 1,080 22.7

10/11/2005 12:11 1.7 5.7 8.3 1,080 22.2

01/10/2006 12:20 0.1 11.7 8 974 14.8

01/10/2006 12:21 0.5 11.4 7.8 995 14.7

04/07/2006 12:20 0.1 9.9 8.4 907 17.8

04/07/2006 12:21 1.0 9.9 8.3 906 17.7

04/07/2006 12:22 2.0 9.8 8.3 905 17.6

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)—Continued

04/07/2006 12:23 3.0 9.7 8.3 904 17.6

04/07/2006 12:24 4.0 9.6 8.3 905 17.4

04/07/2006 12:25 5.0 8.0 8.2 895 16.4

07/11/2006 12:38 0.1 8.5 8.6 969 28.6

07/11/2006 12:39 1.0 8.2 8.6 971 28.5

07/11/2006 12:40 2.0 8.0 8.6 971 28.4

07/11/2006 12:41 3.0 6.3 8.5 973 27.9

07/11/2006 12:42 4.0 2.7 8.0 953 25.7

07/11/2006 12:43 4.3 2.7 8.0 953 25.6

08/23/2006 10:09 0.1 8.5 8.5 964 27.1

08/23/2006 10:10 1.0 8.4 8.5 964 26.9

08/23/2006 10:11 2.0 8.2 8.5 965 26.8

08/23/2006 10:12 2.9 4.8 8.0 962 26.0

10/11/2006 12:00 0.1 PM 8.5 992 23.1

10/11/2006 12:01 1.0 PM 8.4 990 21.8

10/11/2006 12:02 1.2 PM 8.4 990 21.8

01/09/2007 11:30 0.1 13.0 8.3 1,000 13.5

04/10/2007 12:30 0.1 14.0 8.4 1,040 20.5

04/10/2007 12:31 1.0 15.4 8.5 1,040 20.5

07/10/2007 11:30 0.1 8.8 8.0 1,050 26.7

07/10/2007 11:31 1.0 8.6 8.1 1,060 26.6

07/10/2007 11:32 2.0 8.5 8.2 1,060 26.4

10/09/2007 12:30 0.1 10.4 7.8 1,070 22.0

10/09/2007 12:31 0.6 10.3 7.8 1,070 21.9

01/08/2008 11:50 0.1 13.2 8.2 1,130 13.5

01/08/2008 11:52 0.4 13.8 8.2 1,140 13.4

04/15/2008 12:30 0.1 10.1 8.2 824 21.2

04/15/2008 12:31 1.0 10.0 8.2 826 21.1

04/15/2008 12:32 2.0 9.9 8.2 826 21.1

04/15/2008 12:33 2.9 9.7 8.1 822 21.1

07/15/2008 11:30 0.1 10.5 8.2 1,110 27.8

07/15/2008 11:31 1.0 9.2 8.1 1,110 27.4

10/14/2008 13:40 0.1 12.2 8.1 1,110 22.8

10/14/2008 13:41 0.7 17.2 8.2 1,120 23.0

01/13/2009 12:10 0.1 12.4 7.8 1,090 15.5

01/13/2009 12:11 0.6 13.7 7.7 1,070 14.2

04/14/2009 12:40 0.1 7.8 8.2 1,050 19.3

04/14/2009 12:41 1.0 7.0 8.2 1,050 19.3

04/14/2009 12:42 2.0 7.0 8.2 1,050 19.3
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 17

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)—Continued

07/07/2009 11:50 0.1 9.8 8.5 962 26.6

07/07/2009 11:51 1.0 10.0 8.5 964 26.6

07/07/2009 11:52 1.8 10.0 8.5 964 26.0

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na 10.8 8.6 789 24.9

12/17/2003 13:50 na 10.3 9.0 976 14.2

02/18/2004 11:40 na 10.2 7.9 1,060 13.5

04/14/2004 09:30 na 10.3 7.8 1,010 20.3

07/13/2004 15:10 na 8.7 8.7 1,080 25.6

10/12/2004 15:00 na 8.8 8.2 1,040 24.7

01/12/2005 15:00 na 11.9 7.7 846 12.9

04/13/2005 09:30 na 9.8 8.3 986 19.0

07/12/2005 14:10 na 8.1 8.6 1,060 26.1

10/11/2005 13:30 na 9.6 8.4 1,110 21.9

01/10/2006 15:00 na 12.3 7.8 1,180 16.1

04/06/2006 14:10 na 11.4 8.0 713 16.3

07/11/2006 14:50 na 7.7 8.1 1,020 28.7

08/24/2006 14:30 na 9.0 8.2 1,020 26.5

10/11/2006 13:50 na 10.3 8.4 1,050 23.4

01/09/2007 13:30 na 12.9 8.4 735 13.7

04/11/2007 08:30 na 11.8 8.4 777 17.7

07/10/2007 13:10 na 9.3 8.2 885 26.6

10/09/2007 15:10 na 8.8 7.9 1,130 21.9

01/08/2008 14:00 na 13.0 8.2 839 13.0

04/15/2008 13:30 na 12.1 8.5 686 19.4

07/15/2008 14:10 na 10.2 8.1 1,140 27.0

10/15/2009 14:00 na 10.7 7.6 1,180 21.9

01/13/2009 14:00 na 12.0 8.0 915 14.8

04/14/2009 14:30 na 9.2 8.1 869 18.5

07/07/2009 14:00 na 9.7 8.6 675 26.1

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Perdue Treatment Plant—imported raw water at 

Sweetwater Reservoir (SWR09)

10/15/2003 13:00 na 8.3 8.7 778 24.9

12/17/2003 13:30 na 10.5 8.9 834 17.5

02/18/2004 12:00 na 10.9 8.3 442 14.7

04/14/2004 12:20 na 9.5 8.1 774 21.1

10/12/2004 16:30 na 8.3 8.2 775 24.0

01/12/2005 14:40 na 11.2 7.6 821 13.9

04/13/2005 08:40 na 9.3 8.6 707 18.5

07/12/2005 14:00 na 7.4 8.8 872 26.7

10/11/2005 13:50 na 7.8 8.4 880 23.4

01/10/2006 14:50 na 11.9 8.3 845 15.4

04/06/2006 14:20 na 9.9 7.8 692 15.9

07/11/2006 14:40 na 8.3 8.3 720 28.4

10/11/2006 13:40 na 10.0 8.2 714 22.6

01/09/2007 13:20 na 14.4 8.4 693 12.9

04/11/2007 08:50 na 12.5 8.3 747 18.5

07/10/2007 13:00 na 9.7 8.2 863 27.0

10/09/2007 15:00 na 11.5 8.1 736 20.5

01/08/2008 14:10 na 11.2 8.0 806 13.1

04/15/2008 13:40 na 11.4 8.3 672 19.9

07/15/2008 14:00 na 12.5 8.0 895 26.4

01/13/2009 14:10 na 13.6 8.0 893 13.2

04/14/2009 14:20 na 9.5 8.2 848 18.1

07/07/2009 14:20 na 9.5 8.3 662 26.0

Sweetwater River at low-flow diversion dam upstream from 

Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1 4.4 8.6 3,100 18.6

12/17/2003 13:00 0.1 10.3 8.9 2,800 9.5

02/18/2004 15:10 0.1 9.8 7.9 2,700 12.4
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

18 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Sweetwater River at low-flow diversion dam upstream from 

Sweetwater Reservoir (LFDD)—Continued

04/14/2004 10:20 0.1 7.3 7.8 2,860 16.8

07/14/2004 10:10 0.1 3.6 7.6 3,190 21.2

10/13/2004 15:20 0.1 5.8 7.6 3,120 18.9

01/13/2005 14:00 0.1 11.7 7.8 1,020 11.5

04/13/2005 10:20 0.1 9.7 8.1 1,830 14.9

07/13/2005 10:00 0.1 5.2 8.3 2,440 19.5

10/12/2005 13:30 0.1 9.5 8.1 2,580 17.2

01/10/2006 14:20 0.1 12.2 8.0 620 13.0

04/07/2006 13:20 0.1 11.5 7.5 1,780 14.1

07/12/2006 12:30 2.0 7.1 7.9 2,580 24.3

10/11/2006 13:10 0.1 8.8 7.9 2,630 17.7

01/10/2007 13:10 0.1 13.3 7.9 2,790 10.2

04/11/2007 10:20 0.1 8.8 7.7 2,730 15.5

07/11/2007 14:20 0.1 10.4 7.6 2,910 22.6

10/09/2007 14:20 0.1 10.9 7.7 2,860 15.7

01/09/2008 13:30 0.1 13.7 7.7 2,370 12.1

02/01/2008 13:00 0.1 9.6 7.9 816 9.8

04/16/2008 10:10 0.1 10.0 6.8 2,710 15.8

07/16/2008 13:20 0.1 8.5 7.4 2,720 23.6

10/15/2009 13:30 0.1 9.0 7.2 2,820 15.2

01/14/2009 12:40 0.1 11.3 7.7 2,160 11.2

04/15/2009 10:20 0.1 8.6 7.9 2,480 13.9

07/08/2009 11:00 0.1 7.7 7.8 2,070 19.2

Loveland Reservoir near dam (LLR01)

12/17/2003 10:19 0.1 7.9 9.1 615 12.6

12/17/2003 10:20 1.0 7.3 8.9 617 12.4

12/17/2003 10:21 2.0 7.0 8.8 617 12.4

12/17/2003 10:22 3.0 7.0 8.8 616 12.4

12/17/2003 10:23 4.0 7.0 8.7 617 12.4

12/17/2003 10:24 5.0 7.0 8.7 617 12.3

12/17/2003 10:25 6.0 6.9 8.7 617 12.3

12/17/2003 10:26 7.0 6.9 8.6 617 12.3

12/17/2003 10:27 8.0 6.8 8.6 618 12.3

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

12/17/2003 10:28 9.0 6.8 8.6 618 12.3

12/17/2003 10:29 10.0 6.7 8.6 617 12.3

12/17/2003 10:30 12.0 6.7 8.5 618 12.3

12/17/2003 10:31 14.0 6.6 8.5 618 12.3

12/17/2003 10:32 16.0 6.5 8.5 617 12.3

12/17/2003 10:33 18.0 6.3 8.4 617 12.3

12/17/2003 10:34 20.0 6.2 8.4 617 12.3

12/17/2003 10:35 22.0 6.3 8.4 617 12.2

12/17/2003 10:36 24.0 6.3 8.4 617 12.2

12/17/2003 10:37 26.0 6.2 8.4 617 12.2

02/18/2004 10:39 0.1 11.7 8.3 664 11.7

02/18/2004 10:40 1.0 11.7 8.3 664 11.6

02/18/2004 10:41 2.0 11.6 8.3 664 11.5

02/18/2004 10:42 3.0 11.3 8.2 664 11.5

02/18/2004 10:43 4.0 11.0 8.2 665 11.4

02/18/2004 10:44 5.0 10.9 8.2 665 11.4

02/18/2004 10:45 6.0 10.8 8.2 665 11.4

02/18/2004 10:46 7.0 9.9 8.1 665 11.3

02/18/2004 10:47 8.0 9.7 8.1 666 11.3

02/18/2004 10:48 9.0 9.1 8.0 666 11.2

02/18/2004 10:49 10.0 8.8 8.0 666 11.1

02/18/2004 10:50 12.0 8.6 8.0 666 11.1

02/18/2004 10:51 14.0 8.5 8.0 666 11.1

02/18/2004 10:52 16.0 8.4 8.0 666 11.1

02/18/2004 10:53 18.0 8.4 8.0 666 11.1

02/18/2004 10:54 20.0 8.4 8.0 666 11.1

02/18/2004 10:55 22.0 8.4 7.9 666 11.1

02/18/2004 10:56 24.0 8.3 8.0 667 11.1

02/18/2004 10:57 26.0 1.0 7.4 667 11.2

07/14/2004 11:46 0.1 9.2 8.5 712 26.0

07/14/2004 11:47 1.0 9.3 8.5 711 25.9

07/14/2004 11:48 2.0 9.4 8.5 711 25.9

07/14/2004 12:10 3.0 9.3 8.7 711 25.8

07/14/2004 11:49 4.0 9.3 8.5 711 25.6

07/14/2004 11:50 5.0 8.6 8.4 710 25.2

07/14/2004 11:51 6.0 3.8 7.9 702 27.9

07/14/2004 11:52 7.0 0.9 7.6 688 19.7

07/14/2004 11:53 8.0 0.7 7.6 683 17.2

07/14/2004 11:54 9.0 0.7 7.6 676 15.4

07/14/2004 11:55 10.0 1.0 7.6 676 14.2

07/14/2004 11:56 12.0 0.7 7.6 673 12.6

07/14/2004 11:57 14.0 0.4 7.5 672 11.9

07/14/2004 11:58 16.0 0.4 7.5 675 11.9

07/14/2004 11:59 18.0 0.3 7.5 675 11.8

07/14/2004 12:00 20.0 0.3 7.5 675 11.8

07/14/2004 12:01 22.0 0.3 7.5 675 11.8
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 19

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

07/14/2004 12:02 24.0 0.3 7.5 674 11.8

07/14/2004 12:03 26.0 0.3 7.5 675 11.7

07/14/2004 12:04 27.0 0.3 7.3 701 11.8

10/14/2004 10:47 0.1 8.2 8.6 704 21.3

10/14/2004 10:48 1.0 8.0 8.4 704 21.3

10/14/2004 10:49 2.0 7.9 8.4 703 21.3

10/14/2004 10:50 3.0 7.9 8.3 703 21.2

10/14/2004 10:51 4.0 7.8 8.3 703 21.2

10/14/2004 11:20 5.0 7.8 8.3 703 21.2

10/14/2004 10:52 6.0 7.8 8.3 703 21.2

10/14/2004 10:53 7.0 7.8 8.2 703 21.2

10/14/2004 10:54 8.0 7.8 8.2 703 21.2

10/14/2004 10:55 9.0 7.8 8.2 703 21.2

10/14/2004 10:56 10.0 7.7 8.2 703 21.1

10/14/2004 10:57 12.0 3.0 8.1 668 13.8

10/14/2004 10:58 14.0 1.4 8.0 667 12.4

10/14/2004 10:59 16.0 1.0 7.9 668 12.2

10/14/2004 11:00 18.0 0.8 7.8 670 12.1

10/14/2004 11:01 20.0 0.7 7.8 668 12.1

10/14/2004 11:02 22.0 0.6 7.7 668 12.0

10/14/2004 11:03 24.0 0.5 7.7 668 12.0

10/14/2004 11:04 26.0 0.5 7.6 668 12.0

10/14/2004 11:05 27.8 0.5 7.5 671 12.0

01/13/2005 11:07 0.1 10.4 8.2 518 11.7

01/13/2005 11:08 1.0 9.6 8.0 512 11.1

01/13/2005 11:09 2.0 9.3 8.0 511 11.1

01/13/2005 11:10 3.0 9.1 7.9 511 11.0

01/13/2005 11:11 4.0 9.1 7.8 515 11.0

01/13/2005 11:12 5.0 9.0 7.8 521 11.0

01/13/2005 11:13 6.0 9.0 7.8 537 11.0

01/13/2005 11:14 7.0 8.9 7.7 542 11.0

01/13/2005 11:15 8.0 8.9 7.7 542 11.0

01/13/2005 11:16 9.0 8.8 7.7 544 11.0

01/13/2005 11:17 10.0 8.8 7.7 546 11.0

01/13/2005 11:18 12.0 8.8 7.7 550 10.9

01/13/2005 11:19 14.0 8.7 7.6 552 10.9

01/13/2005 11:20 16.0 8.7 7.6 556 10.9

01/13/2005 11:21 18.0 8.4 7.6 571 10.9

01/13/2005 11:22 20.0 8.2 7.6 574 10.8

01/13/2005 11:23 22.0 8.2 7.6 561 10.7

01/13/2005 11:24 24.0 8.4 7.6 507 10.2

01/13/2005 11:25 26.0 8.4 7.6 493 10.1

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

01/13/2005 11:26 28.0 8.4 7.5 505 10.1

01/13/2005 11:27 30.0 6.9 7.5 531 10.3

01/13/2005 11:28 32.0 7.0 7.5 529 10.1

01/13/2005 11:29 33.4 7.4 7.4 558 10.2

10/12/2005 10:42 0.1 8.4 8.7 512 20.5

10/12/2005 10:43 1.0 8.4 8.4 514 20.4

10/12/2005 10:44 2.0 8.3 8.3 514 20.4

10/12/2005 10:45 3.0 8.3 8.2 514 20.3

10/12/2005 11:10 4.0 8.2 8.2 514 20.3

10/12/2005 10:46 5.0 8.1 8.2 514 20.3

10/12/2005 10:47 6.0 8.1 8.2 514 20.3

10/12/2005 10:48 7.0 8.1 8.1 514 20.2

10/12/2005 10:49 8.0 8.1 8.1 514 20.2

10/12/2005 10:50 9.0 1.7 8.0 432 16.6

10/12/2005 10:51 10.0 0.9 7.9 427 15.1

10/12/2005 10:52 12.0 0.7 7.8 421 13.9

10/12/2005 10:53 14.0 0.6 7.7 422 13.2

10/12/2005 10:54 16.0 0.6 7.6 436 12.4

10/12/2005 10:55 18.0 0.5 8.0 442 12.1

10/12/2005 10:56 20.0 0.5 7.6 444 12.0

10/12/2005 10:57 22.0 0.5 7.7 445 11.9

10/12/2005 10:58 24.0 0.5 7.5 445 11.9

10/12/2005 10:59 26.0 0.5 7.8 445 11.8

10/12/2005 11:00 28.0 0.5 7.8 446 11.8

10/12/2005 11:01 30.0 0.4 7.6 447 11.8

10/12/2005 11:02 32.0 0.4 7.4 447 11.8

10/12/2005 11:03 34.0 0.4 7.5 449 11.7

10/12/2005 11:04 36.0 0.4 7.6 450 11.7

10/12/2005 11:05 38.0 0.4 7.3 450 11.7

10/12/2005 11:06 40.0 0.4 7.3 450 11.7

10/12/2005 11:07 42.0 0.4 7.3 452 11.7

10/12/2005 11:08 44.3 0.4 7.2 489 11.7

04/06/2006 11:20 0.1 9.7 5.2 536 15.2

04/06/2006 11:06 1.0 9.6 5.8 535 14.9

04/06/2006 11:07 2.0 9.6 6.1 535 14.7

04/06/2006 11:08 3.0 9.5 6.2 535 14.7

04/06/2006 11:09 4.0 9.4 6.3 536 14.4

04/06/2006 11:10 5.0 9.2 6.4 536 14.4

04/06/2006 11:11 6.0 8.9 6.5 536 14.1

04/06/2006 11:12 7.0 8.6 6.5 535 13.8

04/06/2006 11:13 8.0 8.2 6.5 535 13.4

04/06/2006 11:14 9.0 7.3 6.5 534 12.6

04/06/2006 11:15 10.0 6.6 6.5 533 12.3
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

20 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

04/06/2006 11:16 12.0 6.1 6.4 533 12.2

04/06/2006 11:17 14.0 5.6 6.4 533 12.1

04/06/2006 11:18 16.0 5.2 6.4 533 12.1

04/06/2006 11:19 18.0 5.1 6.4 533 12.1

04/06/2006 11:21 20.0 5.1 6.4 533 12.1

04/06/2006 11:22 22.0 5.1 6.4 533 12.1

04/06/2006 11:23 24.0 5.2 6.4 533 12.1

04/06/2006 11:24 26.0 5.3 6.5 532 12.1

04/06/2006 11:25 28.0 5.5 6.4 532 12.0

04/06/2006 11:26 30.0 5.4 6.5 532 12.0

04/06/2006 11:27 32.0 5.3 6.5 532 12.0

04/06/2006 11:28 34.0 5.0 6.5 532 12.0

07/12/2006 10:50 0.1 9.0 8.7 578 26.9

07/12/2006 10:28 1.0 8.4 8.7 576 26.7

07/12/2006 10:29 2.0 8.3 8.7 577 26.7

07/12/2006 10:30 3.0 8.3 8.7 577 26.7

07/12/2006 10:31 4.0 8.2 8.7 577 26.6

07/12/2006 10:32 5.0 8.1 8.7 577 26.5

07/12/2006 10:33 6.0 3.0 7.7 548 20.9

07/12/2006 10:34 7.0 1.9 7.5 538 17.6

07/12/2006 10:35 8.0 1.7 7.5 535 16.2

07/12/2006 10:36 9.0 1.4 7.4 534 14.9

07/12/2006 10:37 10.0 1.3 7.4 532 14.2

07/12/2006 10:38 12.0 1.2 7.4 528 12.8

07/12/2006 10:39 14.0 1.2 7.4 528 12.5

07/12/2006 10:40 16.0 1.2 7.4 527 12.3

07/12/2006 10:41 18.0 1.2 7.4 528 12.3

07/12/2006 10:42 20.0 1.2 7.4 528 12.3

07/12/2006 10:43 22.0 1.2 7.4 527 12.3

07/12/2006 10:44 24.0 1.2 7.4 529 12.2

07/12/2006 10:45 26.0 1.2 7.4 528 12.2

07/12/2006 10:46 28.0 1.2 7.4 528 12.2

07/12/2006 10:47 30.0 1.3 7.4 528 12.2

07/12/2006 10:48 32.0 1.3 7.4 529 12.2

07/12/2006 10:49 34.0 1.3 7.4 537 12.2

07/12/2006 10:51 35.2 1.3 7.3 575 12.2

08/24/2006 09:59 0.1 11.4 8.6 579 26.0

08/24/2006 10:00 1.0 10.9 8.6 579 25.9

08/24/2006 10:01 2.0 10.7 8.7 579 25.8

08/24/2006 10:02 3.0 10.5 8.6 579 25.8

08/24/2006 10:03 4.0 10.4 8.6 579 25.7

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

08/24/2006 10:04 5.0 10.2 8.7 579 25.6

08/24/2006 10:05 6.0 6.5 8.4 576 24.5

01/10/2007 11:00 0.1 11.6 8.4 570 11.5

01/10/2007 11:01 1.0 9.9 8.2 572 11.3

01/10/2007 11:02 2.0 9.5 8.1 572 11.3

01/10/2007 11:03 3.0 9.4 8.0 572 11.3

01/10/2007 11:04 4.0 9.3 7.9 572 11.3

01/10/2007 11:05 5.0 9.2 7.8 571 11.3

01/10/2007 11:06 6.0 9.1 7.8 571 11.3

01/10/2007 11:07 7.0 9.0 7.7 571 11.3

01/10/2007 11:08 8.0 9.0 7.7 571 11.3

01/10/2007 11:09 9.0 8.9 7.7 571 11.3

01/10/2007 11:10 10.0 8.9 7.7 571 11.3

01/10/2007 11:11 12.0 8.9 7.7 572 11.3

01/10/2007 11:12 14.0 8.8 7.7 572 11.3

01/10/2007 11:13 16.0 8.8 7.6 573 11.3

01/10/2007 11:14 18.0 8.8 7.6 573 11.3

01/10/2007 11:15 20.0 8.7 7.6 573 11.3

01/10/2007 11:16 22.0 8.6 7.6 573 11.3

01/10/2007 11:17 24.0 8.5 7.6 573 11.3

01/10/2007 11:18 26.0 8.4 7.6 573 11.2

01/10/2007 11:19 28.0 8.3 7.6 574 11.2

01/10/2007 11:20 30.0 8.3 7.6 574 11.2

01/10/2007 11:21 32.0 8.3 7.6 574 11.2

01/10/2007 11:22 34.0 8.1 7.6 575 11.2

01/10/2007 11:23 34.8 4.4 7.5 593 11.3

07/11/2007 11:10 0.1 10.9 8.5 627 25.3

07/11/2007 10:57 1.0 10.7 8.4 626 25.2

07/11/2007 10:59 2.0 10.5 8.4 625 25.2

07/11/2007 11:00 3.0 10.3 8.3 625 25.1

07/11/2007 11:01 4.0 10.2 8.3 625 25.0

07/11/2007 11:02 5.0 10.0 8.2 625 24.9

07/11/2007 11:03 6.0 6.0 8.0 619 21.5

07/11/2007 11:04 7.0 1.9 7.5 613 18.0

07/11/2007 11:05 8.0 1.8 7.5 610 16.0

07/11/2007 11:06 9.0 1.7 7.4 606 14.7

07/11/2007 11:07 10.0 1.6 7.3 606 13.3

07/11/2007 11:08 12.0 1.7 7.3 602 11.7

07/11/2007 11:09 14.0 1.9 7.2 600 11.2

07/11/2007 11:11 16.0 2.2 7.2 598 11.1

07/11/2007 11:12 18.0 2.1 7.2 598 11.0

07/11/2007 11:13 20.0 1.9 7.2 599 11.0
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 21

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

07/11/2007 11:14 22.0 1.9 7.1 598 11.0

07/11/2007 11:15 24.0 2.0 7.1 599 11.0

07/11/2007 11:16 26.0 2.1 7.1 599 10.9

07/11/2007 11:17 28.0 2.2 7.1 598 10.9

07/11/2007 11:18 30.0 2.1 7.1 598 10.9

07/11/2007 11:19 32.0 1.7 7.1 598 10.9

07/11/2007 11:20 34.0 1.6 7.1 598 10.9

07/11/2007 11:21 36.0 1.2 7.1 606 10.9

07/11/2007 11:22 38.0 1.1 7.0 640 11.0

07/11/2007 11:23 40.0 1.1 7.0 644 11.0

01/09/2008 10:50 0.1 13.7 8.1 625 11.6

01/09/2008 10:51 1.0 11.3 8.0 625 11.3

01/09/2008 10:52 2.0 10.3 8.0 624 11.3

01/09/2008 10:53 3.0 9.6 8.1 625 11.2

01/09/2008 10:54 4.0 9.4 7.8 625 11.2

01/09/2008 10:55 5.0 9.3 7.9 626 11.2

01/09/2008 10:56 6.0 9.3 7.8 626 11.2

01/09/2008 10:57 7.0 9.2 7.8 625 11.2

01/09/2008 10:58 8.0 9.2 7.8 625 11.2

01/09/2008 10:59 9.0 9.1 7.7 625 11.2

01/09/2008 11:00 10.0 9.1 7.7 625 11.2

01/09/2008 11:01 12.0 9.1 7.7 625 11.2

01/09/2008 11:02 14.0 9.0 7.7 625 11.2

01/09/2008 11:03 16.0 8.8 7.7 626 11.1

01/09/2008 11:04 18.0 8.7 7.7 625 11.1

01/09/2008 11:05 20.0 8.7 7.7 625 11.1

01/09/2008 11:06 22.0 8.7 7.7 626 11.1

01/09/2008 11:07 24.0 8.7 7.7 626 11.1

01/09/2008 11:08 26.0 8.7 7.6 626 11.1

01/09/2008 11:09 28.0 8.7 7.6 626 11.1

01/09/2008 11:10 30.0 8.7 7.6 626 11.1

01/09/2008 11:11 32.0 8.7 7.6 626 11.1

01/09/2008 11:12 34.0 8.6 7.6 627 11.1

01/09/2008 11:13 36.0 7.9 7.6 632 11.1

04/16/2008 11:30 0.1 12.0 8.0 573 17.9

04/16/2008 11:31 1.0 11.7 8.0 569 17.7

04/16/2008 11:32 2.0 11.5 8.0 570 17.4

04/16/2008 11:33 3.0 11.3 8.1 569 17.4

04/16/2008 11:34 4.0 11.2 8.1 569 17.2

04/16/2008 11:35 5.0 11.2 8.1 569 17.0

04/16/2008 11:36 6.0 11.2 8.1 569 16.9

04/16/2008 11:37 7.0 10.0 8.0 572 15.9

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

04/16/2008 11:38 8.0 8.4 7.8 572 15.7

04/16/2008 11:39 9.0 7.0 7.7 573 13.3

04/16/2008 11:40 10.0 5.9 7.6 576 12.2

04/16/2008 11:41 12.0 5.1 7.6 580 11.8

04/16/2008 11:42 14.0 4.0 7.5 582 11.6

04/16/2008 11:43 16.0 3.4 7.5 583 11.5

04/16/2008 11:44 18.0 3.0 7.5 585 11.4

04/16/2008 11:45 20.0 2.7 7.5 587 11.3

04/16/2008 11:46 22.0 2.4 7.4 589 11.3

04/16/2008 11:47 24.0 2.1 7.4 590 11.3

04/16/2008 11:48 26.0 2.0 7.4 591 11.2

04/16/2008 11:49 28.0 2.0 7.4 593 11.2

04/16/2008 11:50 30.0 1.8 7.4 595 11.2

07/16/2008 11:10 0.1 11.2 8.1 605 26.3

07/16/2008 11:11 1.0 10.3 8.1 603 26.2

07/16/2008 11:12 2.0 10.1 8.0 602 26.1

07/16/2008 11:13 3.0 9.9 8.0 601 26.0

07/16/2008 11:14 4.0 9.8 8.0 601 25.9

07/16/2008 11:15 5.0 9.8 8.0 601 25.8

07/16/2008 11:16 6.0 7.8 7.8 590 24.2

07/16/2008 11:17 7.0 5.3 7.5 580 19.9

07/16/2008 11:18 8.0 3.3 7.2 577 18.4

07/16/2008 11:19 9.0 2.7 7.2 575 16.5

07/16/2008 11:20 10.0 2.3 7.1 574 15.3

07/16/2008 11:21 12.0 2.1 7.1 576 13.3

07/16/2008 11:22 14.0 2.0 7.0 576 12.3

07/16/2008 11:23 16.0 2.0 7.0 578 11.9

07/16/2008 11:24 18.0 1.9 7.0 579 11.7

07/16/2008 11:25 20.0 1.9 6.9 581 11.7

07/16/2008 11:26 22.0 1.9 6.9 582 11.6

07/16/2008 11:27 24.0 1.9 6.9 583 11.6

07/16/2008 11:28 26.0 1.9 6.9 584 11.6

07/16/2008 11:29 28.0 1.9 6.9 584 11.6

07/16/2008 11:30 30.0 1.8 6.9 585 11.5

10/15/2008 10:40 0.1 8.8 8.1 599 20.1

10/15/2008 10:41 1.0 8.4 8 605 20.0

10/15/2008 10:42 2.0 8.5 7.9 609 19.9

10/15/2008 10:43 3.0 8.4 7.8 609 19.9

10/15/2008 10:44 4.0 8.4 7.8 611 19.9

10/15/2008 10:45 5.0 8.4 7.8 612 19.9

10/15/2008 10:46 6.0 8.4 7.8 613 19.9

10/15/2008 10:47 7.0 8.4 7.7 613 19.9
Table 3. Water-quality depth-profile data for dissolved oxygen, pH, specific conductance, and water temperature for each sampling 

site and period for the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[Time is denoted in 24-hour format. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Sampling depth is in meters below water surface. 

Shaded data coincide with reservoir water samples. Abbreviations: hh:mm, hour:minute; m, meter; mg/L, milligram per liter; mm/dd/yyyy, month/day/year; na, 

not applicable; PM, probe malfunction; μS/cm, microsiemen per centimeter; °C, degree Celsius]

22 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

10/15/2008 10:48 8.0 8.4 7.7 614 19.9

10/15/2008 10:49 9.0 8.4 7.7 615 19.8

10/15/2008 10:50 10.0 8.0 7.7 615 19.6

10/15/2008 10:51 12.0 2.6 7.5 586 14.1

10/15/2008 10:52 14.0 1.4 7.4 579 12.6

10/15/2008 10:53 16.0 1.1 7.2 581 12.0

10/15/2008 10:54 18.0 1.1 7.2 582 11.9

10/15/2008 10:55 20.0 1.0 7.2 582 11.8

10/15/2008 10:56 22.0 1.0 7.2 583 11.8

10/15/2008 10:57 24.0 1.0 7.1 583 11.8

10/15/2008 10:58 26.0 1.0 7.1 583 11.8

10/15/2008 10:59 28.0 0.9 7.1 582 11.7

10/15/2008 11:00 30.0 0.9 7.1 585 11.7

01/14/2009 10:40 0.1 9.6 7.8 605 12.4

01/14/2009 10:41 1.0 8.8 7.8 605 11.9

01/14/2009 10:42 2.0 8.8 7.8 604 11.6

01/14/2009 10:43 3.0 8.6 7.8 604 11.6

01/14/2009 10:44 4.0 8.5 7.7 603 11.5

01/14/2009 10:45 5.0 8.5 7.7 603 11.5

01/14/2009 10:46 6.0 8.5 7.7 603 11.5

01/14/2009 10:47 7.0 8.5 7.7 603 11.5

01/14/2009 10:48 8.0 8.5 7.7 603 11.5

01/14/2009 10:49 9.0 8.4 7.7 603 11.5

01/14/2009 10:50 10.0 8.4 7.7 603 11.5

01/14/2009 10:51 12.0 8.4 7.6 603 11.5

01/14/2009 10:52 14.0 8.1 7.6 603 11.5

01/14/2009 10:53 16.0 8.0 7.7 602 11.5

01/14/2009 10:54 18.0 7.9 7.7 602 11.5

01/14/2009 10:55 20.0 7.9 7.7 602 11.5

01/14/2009 10:56 22.0 8.2 7.7 602 11.4

01/14/2009 10:57 24.0 8.2 7.7 601 11.4

01/14/2009 10:58 26.0 8.2 7.7 601 11.4

01/14/2009 10:59 28.0 8.2 7.7 601 11.4

01/14/2009 11:00 30.0 8.2 7.7 601 11.3

04/15/2009 13:00 0.1 9.8 8.7 554 15.4

04/15/2009 13:01 1.0 8.9 8.7 553 15.4

04/15/2009 13:02 2.0 8.6 8.6 553 15.4

04/15/2009 13:03 3.0 8.2 8.6 554 15.3

Date 

(mm/dd/

yyyy)

Time

(hh:mm)

Sampling 

depth

(m)

(00098)

Oxygen, 

dissolved

(mg/L)

(00300)

pH, 

water 

whole 

field

(standard 

units)

(00400)

Specific 

conductance

(μS/cm)

(00095)

Water 

temperature

(°C)

(00010)

Loveland Reservoir near dam (LLR01)—Continued

04/15/2009 13:04 4.0 8.0 8.5 555 15.3

04/15/2009 13:05 5.0 7.8 8.5 556 15.1

04/15/2009 13:06 6.0 6.4 8.2 558 14.8

04/15/2009 13:07 7.0 4.8 7.9 556 14.1

04/15/2009 13:08 8.0 3.7 7.7 553 13.3

04/15/2009 13:09 9.0 3.1 7.7 552 12.1

04/15/2009 13:10 10.0 2.9 7.7 551 11.8

04/15/2009 13:11 12.0 2.8 7.6 550 11.5

04/15/2009 13:12 14.0 2.8 7.6 542 11.4

04/15/2009 13:13 16.0 2.8 7.6 548 11.4

04/15/2009 13:14 18.0 2.7 7.6 547 11.4

04/15/2009 13:15 20.0 2.4 7.6 546 11.4

04/15/2009 13:16 22.0 2.0 7.6 545 11.3

04/15/2009 13:17 24.0 1.6 7.6 545 11.3

04/15/2009 13:18 26.0 1.3 7.6 545 11.3

07/08/2009 13:00 0.1 10.8 8.7 438 25.5

07/08/2009 13:01 1.0 10.7 8.6 442 25.3

07/08/2009 13:02 2.0 10.8 8.6 443 24.8

07/08/2009 13:03 3.0 10.7 8.6 444 24.6

07/08/2009 13:04 4.0 10.6 8.6 446 24.5

07/08/2009 13:05 5.0 8.6 8.5 449 24.2

07/08/2009 13:06 6.0 5.1 8.1 453 19.9

07/08/2009 13:07 7.0 3.1 8.0 451 17.7

07/08/2009 13:08 8.0 1.7 7.9 450 16.1

07/08/2009 13:09 9.0 1.6 7.8 450 15.1

07/08/2009 13:10 10.0 1.5 7.8 450 14.2

07/08/2009 13:11 12.0 1.5 7.7 452 13.0

07/08/2009 13:12 14.0 1.4 7.7 448 11.9

07/08/2009 13:13 16.0 1.3 7.7 448 11.7

07/08/2009 13:14 18.0 1.3 7.6 447 11.7

07/08/2009 13:15 20.0 1.3 7.6 447 11.6

07/08/2009 13:16 22.0 1.2 7.6 446 11.6

07/08/2009 13:17 24.0 1.2 7.6 446 11.6

07/08/2009 13:18 26.0 1.2 7.6 445 11.5

07/08/2009 13:19 28.0 1.2 7.6 444 11.5

07/08/2009 13:20 29.0 1.1 7.4 451 11.5
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 23

Semivolatile Organic Compounds

Unfiltered water samples were analyzed for 57 BNA 

extractable compounds, including 16 PAHs on NWQL 

schedule 1383. The analysis included the following 

modifications to the method originally described in Fishman 

(1993). Each 1-L water sample was fortified with surrogate 

compounds (see Quality Control section) and extracted with 

dichloromethane for 6 hours in a continuous liquid-liquid 

extractor. The pH of the sample was made acidic (by addition 

of 2.0 mL of 25 percent sulfuric acid) for the first 3 hours and 

then adjusted to basic (by addition of 7.0 mL of 37 percent 

potassium hydroxide) for the remainder of the extraction. The 

resultant extract was reduced in volume by distillation and 

then by nitrogen gas evaporation to a final volume of 0.4 mL. 

The extract was analyzed for 57 BNA compounds by GC/MS 

operated in the full-scan mode.

Samples collected for methods determining pesticide and 

AOI compounds were filtered at the Perdue Treatment Plant 

through 142-mm diameter, 0.7-μm nominal pore size GFF 

into sample bottles (Sandstrom, 1995). Filtered water samples 

were analyzed for pesticides on NWQL schedules 2003 and 

2060. Schedule 2003 includes 65 pesticides and degradates 

that are a subset of those determined by Zaugg and others 

(1995), Lindley and others (1996), Sandstrom and others 

(2001), and Madsen and others (2003). Each water sample 

was passed through a 0.5-g octadecylsilyl (C-18) solid-phase 

extraction (SPE) column to extract the pesticides dissolved 

in the water. The pesticides were eluted from the columns 

with 2 mL of ethyl acetate, and the extracts were reduced in 

volume, exchanged to toluene to approximately 0.25 mL final 

volume, and analyzed by GC/MS operated in the selectedion monitoring (SIM) mode (Sandstrom and others, 2001). 

Schedule 2060 includes 58 polar pesticides and degradates. 

Each sample was analyzed by SPE using a graphitized carbon 

column (Carbopack B, Supelco; Bellefonte, Pennsylvania) 

and liquid chromatography with mass-spectrometric detection 

operated in SIM mode as detailed in Furlong and others 

(2001). 

Filtered water samples were analyzed for 63 AOI 

compounds on NWQL schedule 1433 (Zaugg and others, 

2002). Some AOI compounds typically are associated with 

wastewater effluent, and some are classified as endocrinedisrupting compounds. Approximately 1 L of a filtered water 

sample was passed through a 1-g Oasis hydrophilic-lipophilic 

balance (HLB; Waters Corp., Milford, Massachusetts) SPE 

column. Eluted analytes were determined by GC/MS operated 

in full-scan mode.

Metals

Metals in unfiltered water samples on NWQL schedule 

1080 were analyzed by using inductively coupled plasmaoptical emission spectroscopy and inductively coupled 

plasma-mass spectrometry methods described in Garbarino 

and Struzeski (1998). Dissolved metals in filtered water 

samples on NWQL schedule 2710 were analyzed by using 

inductively coupled plasma-mass spectrometry methods 

described in Garbarino and Taylor (1996) and Garbarino 

(1999). Dissolved metal samples were processed through a 

0.45-μm capsule filter into the appropriate bottle and acidified 

as needed.

Water-Quality Assurance

The QA and quality control (QC) procedures used for 

surface-water sampling followed the protocols described 

in Mueller and others (1997). The QA plan followed by the 

USGS NWQL is described in Pirkey and Glodt (1998) and 

Maloney (2005). Additionally, the USGS Branch of Quality 

Systems QA program (within the USGS Office of Water 

Quality) maintains a web page with results from the USGS 

Inorganic Blind Sample Project (U.S. Geological Survey, 

variously dated) to document bias and variability for the 

NWQL through the use of blind QA samples. 

Three types of QC samples were used for this study—

matrix spikes, blanks, and replicates. Spikes and blanks are 

used to assess result bias, and replicates are used to assess 

result variability. Spike recoveries are considered to be 

acceptable if they are within ±30 percent of a known spike 

value. Replicates are considered to be acceptable if they 

are within ±30 percent of the original value. Additionally, 

surrogate compounds were added to VOC, BNA, PAH, 

pesticide, and AOI samples at the laboratory to monitor 

sample-specific performance of the analytical method. 

Additional information on water QA methods and QC results 

are presented in the appendix.

A matrix (replicate environmental sample) spike 

is prepared by fortifying reagent water with a known 

concentration of selected analytes and can be used to test the 

effects of various sampled matrices on the recovery of specific 

compounds, including matrix interference or matrix-induced 

analyte degradation. Matrix-spike recoveries are calculated, 

using the following equation:

Recovery = 100 (Cspiked – Cenv/Cexpected) (1)

where

Cspiked is the measured concentration in the spiked 

sample, in micrograms per liter;

Cenv is the measured concentration in the 

associated environmental sample or onequarter of the laboratory reporting level 

(LRL) if no detection, in micrograms per 

liter; and 

Cexpected is the expected concentration of the spike in 

the spiked sample, in micrograms per liter.

Blanks are intended to be free of the analytes of 

interest and can be prepared in the laboratory or field. Blank 

samples are analyzed to test for bias that could result from 

contamination of environmental samples by the analytes of 
24 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

interest or by interfering constituents during any stage of 

sample collection, processing, and analysis. Blanks for water 

samples were collected by processing USGS laboratorycertified reagent water, known to be free of the analytes of 

interest, through any part of the sampling and processing 

stage. A field blank is collected at an environmental sampling 

location through all field-cleaned sampling equipment. 

Field blanks are used to show that all stages of sample 

collection and processing have not introduced contamination. 

Equipment blanks are collected annually and demonstrate 

that the equipment used to collect and process the samples 

is not introducing contamination. Source solution blanks are 

collected to show that the laboratory-certified reagent water is 

free of the analytes of interest. Travel (trip) blanks are used to 

identify contamination that may occur during sample transport 

and analysis rather than as a result of sample collection and 

processing. Travel blanks were processed for VOCs from 

unopened cartridges sent from the lab and processed with the 

environmental samples. 

Replicate samples are collected and processed identically 

to the environmental sample to measure the variability in the 

detected analyte concentration during sample processing and 

analysis. Replicate samples for VOCs and metals (targeted 

compounds) were evaluated by calculating the percentage 

difference of detected analytes from the environmental 

sample.

The quality of analysis was monitored by adding 

surrogate compounds to each sample before it was processed. 

These surrogate compounds are added at the NWQL to 

monitor sample preparation and analysis, and the results are 

given in their respective data tables. For VOCs, surrogates 

1,4-bromofluorobenzene, 1,2-dichloroethane-d4, and 

toluene-d8 were added to each sample. For BNA, surrogates 

2-fluorophenyl, nitrobenzene-d5, phenol-d5, terphenyl, 

and 2,4,6-tribromophenol were added to each sample. For 

pesticides on NWQL schedule 2003, diazinon-d10 and 

α-HCH-d6 were added to each sample. For pesticides on 

NWQL schedule 2060, surrogates barban, caffeine C-13, and 

2,4,5-T were added to each sample. For AOI compounds, 

surrogates bisphenol A-d3, caffeine C-13, decafluorobiphenyl, 

and fluoroanthene-d10 were added to each sample prior to 

extraction. Surrogates were not added to the water samples 

analyzed for metals. 

Water Results

VOCs analyzed in unfiltered water samples (along 

with their applicable LRLs) are given in table 4A, and the 

compounds detected are given in table 4B. Of the 85 VOC 

compounds analyzed, 37 compounds were detected at 

least once. Four compounds (bromodichloromethane, 

dibromochloromethane, tribromomethane, and 

trichloromethane) were detected in 100 percent of the 

samples at site SWR08. Trichloromethane also was detected 

in 100 percent of the samples at sites SWR01, SWR08, and 

SWR09. The highest detections of methyl tert-butyl ether 

(MTBE), benzene, and toluene in the vertical profile of water 

samples for each sampling event at sites SWR01 and SWR03 

are shown in figures 4B, 4C, and 4D, respectively. MTBE 

was detected in most samples during Phase One until the 

spring of 2003. MTBE was not detected in Phases Two and 

Three. Benzene had several detections in Phase One, five 

detections in Phase Two, and one detection in Phase Three. 

Toluene was detected many times in Phase One, had the 

highest concentrations in Phase Two, and was detected five 

times in Phase Three. To avoid falsely implying trends in 

figures 4B–4D because of variations in laboratory reporting 

limits, all non-detections were plotted at a low concentration 

(0.003 μg/L) for a normalized appearance. This normalized 

concentration was chosen because all laboratory reported 

detections were above this value.

The BNA compounds analyzed in NWQL schedule 1383 

(unfiltered water) are given in table 5A, and the compounds 

detected are given in table 5B. Of the 56 BNA compounds 

analyzed, 37 were detected at least once. Isophorone and 

phenol were detected most frequently (45.5 and 40.6 percent, 

respectively). Pesticide compounds analyzed in NWQL 

schedules 2003 (filtered water) and 2060 (filtered water) are 

given in tables 6A and 7A, respectively, and the compound 

concentrations detected are given in tables 6B and 7B, 

respectively. Of the 64 pesticide compounds analyzed in 

schedule 2003, 21 were detected at least once. Prometon 

and simazine were detected most frequently (94.4 and 

83.3 percent, respectively). Of the 59 pesticide compounds 

analyzed in schedule 2060, 14 were detected at least once. 

Caffeine and diuron were detected most frequently (54.3 and 

91.4 percent, respectively).

A variety of AOI compounds, some that typically are 

associated with wastewater effluent, were analyzed (table 8A). 

Concentrations for AOI compounds detected in filtered 

water samples at sites SWR01, SWR03, SWR08, SWR09, 

and LFDD (fig. 2) are given in table 8B. Of the 59 AOI 

compounds analyzed, 17 were detected at least once.

Metals occur naturally but they are also emitted from 

vehicle exhaust and are found in tire-wear and road dust. 

The metal analyses were added to the SWR sampling to help 

understand the role of atmospheric deposition of metals that 

might originate from the SR 125 alignment and the potential 

effect of these metals on water quality. Metal concentrations in 

unfiltered and filtered water samples are given in tables 9A and 

9B, respectively. Of the 19 metals analyzed in unfiltered water 

samples, only silver and thallium were not detected. Of the 

22 metals analyzed in filtered water samples, only beryllium, 

chromium, and thallium were not detected; silver was only 

detected once.
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 25

Table 4A. Volatile organic compounds analyzed in whole-water samples, using U.S. Geological Survey National Water Quality 

Laboratory schedule 2020, for the Sweetwater Reservoir watershed, San Diego County, California.

[The parameter code is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting level (LRL) values are reported as micrograms per liter (μg/L), unless noted.]

Compound Parameter 

code LRL

Acetone 81552 6, 4

Acrylonitrile 34215 1.2, 0.8, 0.4

Benzene 34030 0.021, 0.016

Bromobenzene 81555 0.028, 0.02

Bromochloromethane 77297 0.12, 0.06

Bromodichloromethane 32101 0.028, 0.04

Bromoethene 50002 0.10, 0.12

Bromomethane 34413 0.26, 0.33, 0.4

2-Butanone 81595 4, 2, 1.6

n-Butylbenzene 77342 0.12, 0.14, 0.08

sec-Butylbenzene 77350 0.06, 0.04, 0.02

tert-Butylbenzene 77353 0.06, 0.08

Carbon disulfide 77041 0.038, 0.06, 0.04

Chlorobenzene 34301 0.028, 0.02

Chloroethane 34311 0.12, 0.10

Chloromethane 34418 0.17, 0.10, 0.14

3-Chloropropene 78109 0.5, 0.08

2-Chlorotoluene 77275 0.04, 0.02

4-Chlorotoluene 77277 0.05, 0.04, 0.02

Dibromochloromethane 32105 0.10, 0.12

1,2-Dibromo-3-chloropropane 82625 0.51, 0.5, 1

1,2-Dibromoethane 77651 0.036, 0.04

Dibromomethane 30217 0.050, 0.04

1,2-Dichlorobenzene 34536 0.048, 0.04, 0.02

1,3-Dichlorobenzene 34566 0.03, 0.04, 0.02

1,4-Dichlorobenzene 34571 0.034, 0.04, 0.02

trans-1,4-Dichloro-2-butene 73547 0.70, 0.6, 0.4

Dichlorodifluoromethane 34668 0.18, 0.14, 0.1

1,1-Dichloroethane 34496 0.035, 0.06, 0.04

1,2-Dichloroethane 32103 0.13, 0.10, 0.06

1,1-Dichloroethylene 34501 0.024, 0.02

cis-1,2-Dichloroethylene 77093 0.024, 0.02

trans-1,2-Dichloroethylene 34546 0.032, 0.018

Dichloromethane 34423 0.06, 0.04

1,2-Dichloropropane 34541 0.029, 0.02

1,3-Dichloropropane 77173 0.06

2,2-Dichloropropane 77170 0.05, 0.06

1,1-Dichloropropene 77168 0.026, 0.04

cis-1,3-Dichloropropene 34704 0.05, 0.06, 0.1

trans-1,3-Dichloropropene 34699 0.09, 0.10

Diethyl ether 81576 0.08, 0.12

Diisopropyl ether 81577 0.10, 0.06

Ethylbenzene 34371 0.030, 0.02, 0.04

Ethyl tert-butyl ether 50004 0.05, 0.030, 0.04

Ethyl methacrylate 73570 0.18, 0.14

o-Ethyl toluene 77220 0.06, 0.04, 0.02

Compound Parameter 

code LRL

Hexachlorobutadiene 39702 0.14, 0.10, 0.06

Hexachloroethane 34396 0.14

2-Hexanone 77103 0.7, 0.4, 0.6

Isopropylbenzene 77223 0.038, 0.04

4-Isopropyl-1-methylbenzene 77356 0.08, 0.06

Methyl acrylate 49991 2, 1.0, 0.4, 0.6

Methyl acrylonitrile 81593 0.76, 0.40, 0.2

Methyl iodide 77424 0.35, 0.50, 0.4, 0.8

Methyl methacrylate 81597 0.35, 0.20

4-Methyl-2-pentanone 78133 0.37, 0.2, 0.4

Methyl tert-butyl ether (MTBE) 78032 0.17, 0.10

Naphthalene 34696 0.52, 0.4, 0.2

tert-Pentyl methyl ether 50005 0.08, 0.04, 0.06

n-Propylbenzene 77224 0.042, 0.04

Styrene 77128 0.042, 0.04

1,1,1,2-Tetrachloroethane 77562 0.030, 0.04

1,1,2,2-Tetrachloroethane 34516 0.16, 0.08, 0.10

Tetrachloroethylene 34475 0.06, 0.03, 0.04

Tetrachloromethane 32102 0.06, 0.08

Tetrahydrofuran 81607 2.2, 1.0, 1.4

1,2,3,4-Tetramethylbenzene 49999 0.14, 0.08

1,2,3,5-Tetramethylbenzene 50000 0.14, 0.18, 0.12, 0.08

Toluene 34010 0.05, 0.02, 0.018

Tribromomethane 32104 0.1

1,2,3-Trichlorobenzene 77613 0.27, 0.18, 0.12, 

0.08, 0.06

1,2,4-Trichlorobenzene 34551 0.12, 0.08, 0.04

1,1,1-Trichloroethane 34506 0.032, 0.04, 0.02

1,1,2-Trichloroethane 34511 0.064, 0.04, 0.06

Trichloroethylene 39180 0.038, 0.02

Trichlorofluoromethane 34488 0.16, 0.08

Trichloromethane (chloroform) 32106 0.024, 0.04, 0.02

1,2,3-Trichloropropane 77443 0.18, 0.12

1,1,2-Trichlorotrifluoroethane 

(Freon 113)

77652 0.038, 0.04

1,2,3-Trimethylbenzene 77221 0.06, 0.09, 0.08

1,2,4-Trimethylbenzene 77222 0.056, 0.04

1,3,5-Trimethylbenzene 77226 0.044, 0.04

Vinyl Chloride 39175 0.06, 0.08

m- and p-Xylene 85795 0.06, 0.08

o-Xylene 77135 0.038, 0.04

1,4-Bromofluorobenzene, surrogate 99834 percent

1,2-Dichloroethane-d4, surrogate 99832 percent

Toluene-d8, surrogate 99833 percent
26 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 4B. Analytical results for Volatile Organic Compounds detected in whole-water samples, using U.S. Geological Survey National 

Water Quality Laboratory schedule 2020, from the Sweetwater Reservoir watershed, San Diego County, California.

(Table 4B is provided separately as a Microsoft Excel® worksheet.)

IP002295Figure 04a

0

1

2

3

4

5

6

7

8

9

10

1999 2000 2001 2002 2003 2004 2005

Apr Oct Jan Jul Apr Oct Jan Jul Apr Oct Jan Jul Apr Oct Jan Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Apr

2006 2007 2008 2009

Jul Jan JulApr Oct Jan Jul Oct Jan Apr Jul Oct Jan Apr Jul Apr

Date

Air concentration, in parts per billion by volume

Phase 1 Phase 2 Phase 3

Methyl tert-butyl ether (MTBE)

Benzene

Toluene

A

Measured air concentration for—

EXPLANATION

Figure 4. A, Concentrations in air of methyl tert-butyl ether (MTBE), benzene, and toluene at the Sweetwater Reservoir (SWR) 

atmospheric sampling site; and concentrations in air and water of B, MTBE; C, benzene; and D, toluene at SWR near the pump tower 

(site SWR01) and at center of minimum pool (site SWR03), San Diego County, California.
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 27

IP002295_Figure 04bcd

SWR01 SWR03

Toluene

Laboratory reporting limit (LRL) =

 0.018 microgram per liter for water

Measured air concentration Non-detect line for water

EXPLANATION

SWR01 SWR03

Benzene

Laboratory reporting limit (LRL) =

 0.016 microgram per liter for water

Measured air concentration

Non-detect line

 for water

EXPLANATION

SWR01

Measured air concentration

Measured water concentration

Measured water concentration

Measured water concentration

SWR03

Methyl tert-butyl ether (MTBE)

Laboratory reporting limit (LRL) =

 0.1 microgram per liter for water Non-detect line for water

EXPLANATION

0

0.05

0.1

0.15

0.2

0.25

0.3

0

2

4

6

8

10

1998 1999 2000 2001 2002 2003 2004 2005

Oct Jan Apr Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

2006 2007 2008 2009

Jul Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul

Date

Water concentration, in micrograms per liter

Air concentration, in parts per billion by volume

Phase 1 Phase 2 Phase 3

0

0.005

0.01

0.015

0.02

0.025

0

0.05

0.1

0.15

0.2

0.25

0.035

0.03

0

2

4

6

8

10

Phase 1 Phase 2 Phase 3

0

2

4

6

8

10

Phase 1 Phase 2 Phase 3

B

C

D

Figure 4. —Continued
28 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 5A. Base-neutral acid compounds analyzed in whole-water samples, using U.S. Geological Survey National Water Quality 

Laboratory schedule 1383, for the Sweetwater Reservoir watershed, San Diego County, California.

[The parameter code is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific 

constituent or property. This schedule is not the preferred method for compounds 1,2-Dichlorobenzene, 1,3-Dichlorobenzene, 1,4-Dichlorobenzene, Hexachlorobutadiene, Hexachloroethane, Naphthalene, and 1,2,4-Trichlorobenzene. Laboratory reporting level (LRL) values are reported as micrograms per liter (μg/L), 

unless noted. *, denotes polycyclic aromatic hydrocarbons] 

Compound Parameter 

code LRL

Acenaphthene* 34205 1.9, 0.28

Acenaphthylene* 34200 1.8, 0.30

Anthracene* 34220 2.0, 0.39

Benz[a]anthracene* 34526 1.6, 0.26

Benzo[a]pyrene* 34247 1.3, 0.33

Benzo[b]fluoranthene* 34230 1.9, 0.40

Benzo[ghi]perylene* 34521 1.6, 0.64, 0.4

Benzo[k]fluoranthene* 34242 1.4, 0.45, 0.4

Benzyl n-butyl phthalate 34292 1.8, 1.26, 0.4

4-Bromophenyl phenyl ether 34636 2.1, 0.36

bis(2-Chloroethoxy)methane 34278 1.0, 0.35, 0.2

bis(2-Chloroethyl) ether 34273 1.0, 0.30

bis(2-Chloroisopropyl) ether 34283 1.0, 0.38

4-Chloro-3-methylphenol 34452 1.6, 0.55

2-Chloronaphthalene* 34581 1, 0.38. 0.20

2-Chlorophenol 34586 1.2, 0.42

4-Chlorophenyl phenyl ether 34641 1.2, 0.34

Chrysene* 34320 1.2, 0.33

Dibenz[a,h]anthracene* 34556 2.2, 0.70, 0.4

1,2-Dichlorobenzene 34536 1.5, 0.49, 0.20

1,3-Dichlorobenzene 34566 1.2, 0.57, 0.20

1,4-Dichlorobenzene 34571 1.4, 0.53, 0.20

3,3-Dichlorobenzidine 34631 0.9, 0.65, 0.4

2,4-Dichlorophenol 34601 2.5, 0.39

Diethyl phthalate 34336 1.6, 0.61

2,4-Dimethylphenol 34606 2.0, 0.37, 0.60

Dimethyl phthalate 34341 1.0, 0.59, 0.4

Di-n-butyl phthalate 39110 1.7, 0.87, 0.4

Di-n-octyl phthalate 34596 2.3, 1.86, 0.4

2,4-Dinitrophenol 34616 3.3, 0.80, 1.4

2,4-Dinitrotoluene 34611 1.4, 0.43, 0.60

Compound Parameter 

code LRL

2,6-Dinitrotoluene 34626 2.3, 0.43

1,2-Diphenylhydrazine 82626 2.2, 0.30

bis(2-Ethylhexyl) phthalate 39100 1.8, 1.05, 2

Fluoranthene* 34376 1.4, 0.30

Fluorene* 34381 1.2, 0.33

Hexachlorobenzene 39700 1.0, 0.30

Hexachlorobutadiene 39702 1.2, 0.46, 0.2

Hexachlorocyclopentadiene 34386 1.2, 0.52, 0.4

Hexachloroethane 34396 1.6, 0.66, 0.2

Indeno[1,2,3-cd]pyrene* 34403 1.8, 0.56, 0.4

Isophorone* 34408 2.2, 0.60, 0.4

2-Methyl-4,6-dinitrophenol 34657 1.8, 0.77

Naphthalene 34696 1.6, 0.32

Nitrobenzene 34447 1.4, 0.21

2-Nitrophenol 34591 1.4, 0.30, 0.6, 0.4

4-Nitrophenol 34646 2.4, 0.51

N-Nitrosodimethylamine 34438 1.6, 0.33, 0.2

N-Nitrosodi-n-propylamine 34428 1.6, 0.82, 0.4

N-Nitrosodiphenylamine 34433 1.9, 0.81, 0.4

Pentachlorophenol 39032 1.8, 0.87, 0.4, 1.2

Phenanthrene* 34461 1.0, 0.32

Phenol 34694 1.6, 0.44

Pyrene* 34469 1.6, 0.35

1,2,4-Trichlorobenzene 34551 1.2, 0.41, 0.20

2,4,6-Trichlorophenol 34621 1.4, 0.31, 0.6

2-Fluorophenol, surrogate L2325 percent

2-Fluorophenyl, surrogate 91822 percent

Nitrobenzene-d5, surrogate 91820 percent

Phenol-d5, surrogate 90630 percent

Terphenyl-d14, surrogate 91821 percent

2,4,6-Tribromophenol, surrogate 90652 percent

Table 5B. Analytical results for base-neutral acid compounds detected in whole-water samples, using U.S. Geological Survey National 

Water Quality Laboratory schedule 1383, from the Sweetwater Reservoir watershed, San Diego County, California.

(Table 5B is provided separately as a Microsoft Excel® worksheet.)
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 29

Table 6A. Pesticide compounds analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory 

schedule 2003, for the Sweetwater Reservoir watershed, San Diego County, California.

[The parameter code is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting level (LRL) values are reported as micrograms per liter (μg/L), unless noted.]

Compound Parameter 

code LRL

Acetochlor 49260 0.006

Alachlor 46342 0.005

Atrazine 39632 0.007

Azinphos-methyl 82686 0.05

Azinphos-methyl oxygen analog 61635 0.031

Benfluralin 82673 0.01

Carbaryl 82680 0.041

2-Chloro-2ʹ,6ʹ-diethylacetanilide 61618 0.005

4-Chloro-2-methylphenol 61633 0.006

Chlorpyrifos 38933 0.005

Chlorpyrifos oxygen analog 61636 0.056

Cyfluthrin 61585 0.008, 0.027

Cypermethrin 61586 0.009

Dacthal (DCPA) 82682 0.003

Deethylatrazine 04040 0.014

Desulfinylfipronil 62170 0.012

Desulfinylfipronil amide 62169 0.029

Diazinon 39572 0.005

3,4-Dichloroaniline 61625 0.005

Dichlorvos 38775 0.012

Dicrotophos 38454 0.084

Dieldrin 39381 0.009

2,6-Diethylaniline 82660 0.006

Dimethoate 82662 0.006

Ethion 82346 0.004

Ethion monoxon 61644 0.034, 0.002

2-Ethyl-6-methylaniline 61620 0.005

2-[(2-Ethyl-6-methylphenyl)-amino]-

1-propanol

61615 0.126

Fenamiphos 61591 0.029

Fenamiphos sulfone 61645 0.008, 0.049

Fenamiphos sulfoxide 61646 0.031, 0.038

Fipronil 62166 0.016

Fipronil sulfide 62167 0.013

Compound Parameter 

code LRL

Fipronil sulfone 62168 0.024

Fonofos 04095 0.003

Fonofos oxygen analog 61649 0.002, 0.003

Hexazinone 04025 0.013

Iprodione 61593 1.42, 0.538

Isofenphos 61594 0.003

Malaoxon 61652 0.008, 0.030

Malathion 39532 0.027

Metalaxyl 61596 0.005

Methidathion 61598 0.006

Metolachlor 39415 0.013, 0.006

Metribuzin 82630 0.006

Myclobutanil 61599 0.008

1-Naphthol 49295 0.088

Paraoxon-methyl 61664 0.03

Parathion-methyl 82667 0.015

Pendimethilan 82683 0.022

cis-Permethrin 82687 0.006

Phorate 82664 0.011

Phorate oxygen analog 61666 0.097, 0.105

Phosmet 61601 0.008

Phosmet oxygen analog 61668 0.055, 0.051

Prometon 04037 0.005, 0.010

Prometryn 04036 0.005

Propyzamide 82676 0.004

Simazine 04035 0.005

Tebuthiuron 82670 0.016

Terbufos 82675 0.017

Terbufos oxygen analog sulfone 61674 0.068

Terbuthylazine 04022 0.010

Trifluralin 82661 0.009

Diazinon-d10, surrogate 99994 percent

α-HCH-d6, surrogate 99995 percent
30 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 6B. Analytical results for pesticide compounds detected in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, from the Sweetwater Reservoir watershed, San Diego County, California. [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting level are listed on table 5A. Concentrations are given in micrograms per liter (μg/L), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na; not applicable; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Atrazine (39632) Benfluralin (82673) Dacthal (DCPA) (82682) Deethylatriazine (04040) Desulfinyl fipronil (62170) Desulfinylfipronil amide (62169) Diazinon (39572) 3,4- Dichloroaniline (61625) Fipronil (62166) Fipronil sulfide (62167) Fipronil sulfone (62168) Hexazinone (04025) Sweetwater Reservoir near pump tower (SWR01) 10/14/2003 13:30 4.0

—

—

—

—

—

—

— 0.006

—

—

—

—

12/16/2003 12:00 4.0

—

—

—

—

—

—

—

—

—

—

—

—

02/17/2004 15:40 5.0 E0.002

—

—

—

—

—

— E0.004

—

—

— E0.009

10/12/2004 13:00 3.0

—

—

—

—

—

—

—

—

—

—

—

—

01/12/2005 11:30 6.0 0.010 E0.008 0.003

— E0.008 E0.008

—

— E0.010 E0.008 E0.009 E0.012

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:10 4.0

—

—

—

—

—

—

— 0.007

—

—

—

—

12/16/2003 13:00 4.0

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na E0.005

—

— E0.003

—

—

—

—

—

—

— E0.012

12/17/2003 13:50 na

—

—

—

—

—

—

—

—

—

—

—

—

02/18/2004 11:40 na E0.002

—

— E0.001

—

—

— E0.002

—

—

— E0.009

Perdue Treatment Plant—imported raw water at Sweetwater Reservoir (SWR09)

12/17/2003 13:30 na E0.004

—

—

—

—

—

—

—

—

—

—

—

02/18/2004 12:00 na E0.003

— E0.002 E0.001

—

— E0.004 0.015

—

—

— 0.014

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1

—

—

—

—

—

—

— E0.004

—

—

—

—

12/17/2003 13:00 0.1

—

—

—

—

—

—

—

—

—

—

—

—

02/18/2004 15:10 0.1

—

— E0.001

— E0.003

— E0.003 0.009 E0.005

—

—

—

10/13/2004 15:20 0.1

—

—

—

—

—

—

—

—

—

—

—

—

01/13/2005 14:00 0.1

— E0.009 0.004

— E0.008 E0.009 0.012 0.013 E0.012 E0.009 E0.010

—

Loveland Reservoir near dam (LLR01)

12/17/2003 10:30 12

—

—

—

—

—

—

—

—

—

—

—

—
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 31

Table 6B. Analytical results for pesticide compounds detected in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting level are listed on table 5A. Concentrations are given in micrograms per liter (μg/L), 

unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na; not applicable; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Malathion 

(39532)

Metalaxyl 

(61596)

Metolachlor 

(39415)

Prometon 

(04037)

Prometryn 

(04036)

Simazine 

(04035)

Tebuthiuron 

(82670)

Terbuthylazine 

(04022 )

Trifluralin 

(82661)

Diazinon 

d10, 

surrogate

(percent) 

(99994)

α-HCHd6, 

surrogate 

(percent) 

(99995)

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0

—

—

— 0.007

— 0.008

—

—

— 100 87.0

12/16/2003 12:00 4.0

—

—

— E0.005

— 0.005

—

—

— 95.6 87.9

02/17/2004 15:40 5.0 E0.006

— E0.005 E0.004 E0.003 0.006

—

—

— 97.5 82.8

10/12/2004 13:00 3.0

—

—

—

—

— 0.008

—

—

— 85.0 88.8

01/12/2005 11:30 6.0

— 0.037 0.009 0.014

— 0.014 0.05

— E0.006 124 102

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:10 4.0

—

—

— 0.010

— 0.01

—

—

— 103 88.1

12/16/2003 13:00 4.0

—

—

— 0.010

— 0.007

—

—

— 98.4 90.6

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na

—

— E0.007 E0.004

— 0.007

—

—

— 98.2 91.1

12/17/2003 13:50 na

—

—

— 0.006

— E0.005

—

—

— 87.1 89.5

02/18/2004 11:40 na

—

— E0.005 E0.004

— 0.006

—

—

— 93.4 83.6

Perdue Treatment Plant—imported raw water at Sweetwater Reservoir (SWR09)

12/17/2003 13:30 na

—

— E0.006 E0.005

— 0.007

— E0.003

— 98.2 87.5

02/18/2004 12:00 na

—

— E0.005 E0.003 E0.004 0.013

— E0.002

— 95.3 84.9

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1

—

—

— 0.006

—

—

—

—

— 100 86.8

12/17/2003 13:00 0.1

—

—

— 0.007

— E0.004

—

—

— 98.1 87.9

02/18/2004 15:10 0.1

—

—

— 0.013

— 0.006 0.02

—

— 99.1 81.9

10/13/2004 15:20 0.1

—

—

— E0.005

—

—

—

—

— 84.0 95.0

01/13/2005 14:00 0.1

—

—

— 0.013

— 0.012 0.03

— E.007 114 98.6

Loveland Reservoir near dam (LLR01)

12/17/2003 10:30 12

—

—

— 0.006

—

—

—

—

— 91.9 86.8
32 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 7A. Pesticide compounds analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory 

schedule 2060, for the Sweetwater Reservoir watershed, San Diego County, California.

[The parameter code is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting level (LRL) values are reported as micrograms per liter (μg/L), unless noted. This schedule is not the preferred method 

for compounds atrazine, 2-chloro-4-isopropylamino-6-amino-s-triazine, caffeine, and tebuthiuron.]

Compound Parameter 

code LRL

Acifluorfen 49315 0.007, 0.028

Aldicarb sulfone 49313 0.02, 0.018, 0.08

Aldicarb sulfoxide 49314 0.008, 0.022

Aldicarb 49312 0.04

Atrazine 39632 0.009, 0.008

Bendiocarb 50299 0.025, 0.020

Benomyl 50300 0.004, 0.020

Bensulfuron 61693 0.016, 0.018

Bentazon 38711 0.011, 0.012

Bromacil 04029 0.033, 0.018

Bromoxynil 49311 0.017, 0.028

Caffeine 50305 0.010, 0.018

Carbaryl 49310 0.028, 0.018

Carbofuran 49309 0.006, 0.016

Chloramben methylester 61188 0.018, 0.024

Chlorimuron-ethyl 50306 0.035, 0.010, 0.032

2-Chloro-6-ethylamino-4-

amino-s-triazine

04038 0.01, 0.044, 0.04

2-Chloro-4-isopropylamino-6-

amino-s-triazine (CIAT)

04040 0.028

N-(4-Chlorophenyl)-N′-methylurea 61692 0.024, 0.036

Clopyralid 49305 0.014, 0.024

Cycloate 04031 0.013, 0.014

2,4-D 39732 0.022, 0.038

2,4-DB 38746 0.016

2,4-D methyl ester 50470 0.009

Dacthal monoacid 49304 0.012, 0.028

Dicamba 38442 0.013, 0.036

Dichlorprop 49302 0.014, 0.028

Dinoseb 49301 0.012, 0.038

Diphenamid 04033 0.026, 0.010

Diuron 49300 0.015, 0.016

Fenuron 49297 0.032, 0.019, 0.018

Compound Parameter 

code LRL

Flumetsulam 61694 0.011, 0.040

Fluometuron 38811 0.031, 0.016

3-Hydroxycarbofuran 49308 0.006, 0.008

2-Hydroxy-4-isopropylamino-6-

ethylamino-s-triazine

50355 0.008, 0.032

Imazaquin 50356 0.016, 0.036

Imazethapyr 50407 0.017, 0.038

Imidacloprid 61695 0.007, 0.020

Linuron 38478 0.014

MCPA 38482 0.016, 0.030

MCPB 38487 0.015, 0.010

Metalaxyl 50359 0.02, 0.012

Methiocarb 38501 0.008, 0.010

Methomyl 49296 0.004, 0.020

Metsulfuron 61697 0.025

Neburon 49294 0.012

Nicosulfuron 50364 0.013, 0.04

Norflurazon 49293 0.016, 0.020

Oryzalin 49292 0.018, 0.012

Oxamyl 38866 0.012, 0.030

Picloram 49291 0.020, 0.032

Propham 49236 0.010, 0.030

Propiconazole 50471 0.021, 0.010

Propoxur 38538 0.008

Siduron 38548 0.017, 0.020

Sulfometuron 50377 0.009, 0.038

Tebuthiuron 82670 0.006, 0.026

Terbacil 04032 0.010, 0.016

Triclopyr 49235 0.022, 0.026

Barban, surrogate 99959 percent

Caffeine-C13, surrogate 90640 percent

2,4,5-T, surrogate 99958 percent
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 33

Table 7B. Analytical results for pesticide compounds detected in filtered-water samples using U.S. Geological Survey National Water 

Quality Laboratory schedule 2060, from the Sweetwater Reservoir watershed, San Diego County, California.

[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in 

the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory 

reporting levels are listed on table 6A. Concentrations are given in micrograms per liter (μg/L), unless noted. Abbreviations: E, estimated or having a higher 

degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Bentazon 

(38711)

Bromacil 

(04029)

Caffeine 

(50305)

2,4-D 

(39732)

Diphenamid 

(04033)

Diuron 

(49300)

Fluometuron 

(38811)

Hydroxyatriazine 

(50355)

Metalaxyl 

(50359)

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0 E0.01 — E0.012 — — E0.03 — E0.007 —

12/16/2003 12:00 4.0 — — — — — 0.02 — E0.004 —

10/12/2004 13:00 3.0 — — — — — 0.06 — — —

01/12/2005 11:30 6.0 — — 0.035 — — 0.10 — — 0.05

04/12/2005 13:10 3.0 — — E0.035 — — E0.05 — — —

07/12/2005 11:00 2.0 — — 0.050 — — 0.05 — — —

10/11/2005 10:50 5.0 — — E0.039 — — E0.05 — — —

01/10/2006 11:20 4.0 — — — — — E0.04 — — E0.01

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:10 4.0 E0.01 — E0.012 — — E0.03 — E0.006 —

10/11/2005 11:30 6.0 — — E0.042 — — E0.05 — — E0.01

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:00 0.2 E0.01 — E0.011 — — E0.03 — E0.006 —

12/16/2003 13:30 0.5 — — — — — 0.02 — E0.004 —

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na E0.005 — E0.009 0.03 — — — E0.004 —

12/17/2003 13:50 na — — — — — 0.02 — E0.004 —

10/12/2004 15:00 na — — E0.014 E0.02 — 0.04 — E0.018 —

01/12/2005 15:00 na — — E0.012 — — 0.05 — E0.015 —

04/13/2005 09:30 na — — 0.027 — — 0.08 — — 0.02

07/12/2005 14:10 na — — 0.024 — — 0.05 — — —

10/11/2005 13:30 na — — — — — 0.04 — — E0.01

01/10/2006 15:00 na — — — — — E0.03 — — E0.01

Perdue Treatment Plant—imported raw water at Sweetwater Reservoir (SWR09)

10/15/2003 13:00 na E0.01 — E0.008 0.02 — 0.02 — E0.005 —

12/17/2003 13:30 na — — E0.008 E0.01 — 0.04 — — —

10/12/2004 16:30 na — — — E0.02 — 0.05 — E0.014 —

01/12/2005 14:40 na — — E0.013 — — 0.05 — E0.011 —

04/13/2005 08:40 na — 0.03 — — — 0.29 — E0.013 —

07/12/2005 14:00 na — — — — — 0.04 — — —

01/10/2006 14:50 na — — — — — 0.05 — — —

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1 — — — — E0.004 — E0.004 E0.012 —

12/17/2003 13:00 0.1 — — — — E0.004 0.02 — E0.006 —

07/14/2004 10:10 0.1 — — — — — — — — —

10/13/2004 15:20 0.1 — — — — E0.004 — — E0.009 —

01/13/2005 14:00 0.1 — — 0.037 — E0.003 0.18 — — —

07/13/2005 10:00 0.1 — — — — — 0.02 — — —

Loveland Reservoir near dam (LLR01)

12/17/2003 10:30 12 — — 0.022 — — 0.02 — — —

01/13/2005 11:20 16 — — 0.037 — — 0.16 — — —
34 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 7B. Analytical results for pesticide compounds detected in filtered-water samples using U.S. Geological Survey National Water 

Quality Laboratory schedule 2060, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued

[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in 

the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory 

reporting levels are listed on table 6A. Concentrations are given in micrograms per liter (μg/L), unless noted. Abbreviations: E, estimated or having a higher 

degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Methomyl 

(49296)

Neburon 

(49294)

Norflurazon 

(49293)

Sulfometuronmethyl 

(50337)

Tebuthiuron 

(82670)

Barban, 

surrogate

(percent) 

(90640)

Caffeine-C13, 

surrogate

(percent)

 (99959)

2,4,5-T, 

surrogate 

(percent) 

(99958)

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0 — — — — — 0.0 0.0 99.6

12/16/2003 12:00 4.0 — — — — — 78.7 75.8 97.9

10/12/2004 13:00 3.0 — — — — — 107 71.4 64.5

01/12/2005 11:30 6.0 — — — — E0.016 117 81.1 111

04/12/2005 13:10 3.0 — — — — — E112 E5.2 74.3

07/12/2005 11:00 2.0 — — — — — 108 96.8 116

10/11/2005 10:50 5.0 — — — — — E88.1 E164 E154

01/10/2006 11:20 4.0 — — — — E0.014 E182 E105 E175

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:10 4.0 — — — — E0.004 0.0 0.0 100

10/11/2005 11:30 6.0 — — — — — E158 E92.3 E159

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:00 0.2 — — — — E0.003 0.0 0.0 93.7

12/16/2003 13:30 0.5 — — — — E0.003 83.3 70.4 102

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na E0.004 — — — — 56.4 132 108

12/17/2003 13:50 na — — — — — 77.0 82.3 108

10/12/2004 15:00 na — — — — — 115 111 70.2

01/12/2005 15:00 na — — — — — 113 109 102

04/13/2005 09:30 na — — — — — 95.2 97.0 72.2

07/12/2005 14:10 na — — — — — 98.8 123 111

10/11/2005 13:30 na — — — — — E159 89.8 E161

01/10/2006 15:00 na — — — — E0.014 E180 E107 E183

Perdue Treatment Plant—imported raw water at Sweetwater Reservoir (SWR09)

10/15/2003 13:00 na — — — — — 55.7 124 101

12/17/2003 13:30 na — — — — — 74.9 82.2 97.6

10/12/2004 16:30 na — — — — — 104 108 70.7

01/12/2005 14:40 na — — — — — 97.4 91.2 89.3

04/13/2005 08:40 na — — — — — 96.8 116 70.6

07/12/2005 14:00 na — — — — — 95.9 100 95.2

01/10/2006 14:50 na — — — — — 137 97.5 155

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1 — E0.01 E0.004 — E0.004 0.0 0.0 93.4

12/17/2003 13:00 0.1 — — — — E0.006 104 47.4 94.2

07/14/2004 10:10 0.1 — — — — — 0.0 212 34.0

10/13/2004 15:20 0.1 — — — — — 124 81.9 E59.0

01/13/2005 14:00 0.1 — — — E0.021 E0.014 116 70.3 79.1

07/13/2005 10:00 0.1 — — — — — 100 68.6 95.5

Loveland Reservoir near dam (LLR01)

12/17/2003 10:30 12 — — — — — 80.9 65.6 94.8

01/13/2005 11:20 16 — — — — — 81.7 101 110
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 35

Table 8A. Anthropogenic organic indicator compounds analyzed in filtered-water samples, using U.S. Geological Survey National 

Water Quality Laboratory schedule 1433, for the Sweetwater Reservoir watershed, San Diego County, California.

[The parameter code is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting level (LRL) values are reported as micrograms per liter (μg/L), unless noted. This schedule is not the preferred method 

for compounds bromacil, carbaryl, chlorpyrifos, diazinon, metalaxyl, metolachlor, and prometon.]

Compound Parameter 

code LRL

Acetophenone 62064 0.5

Acetylhexamethyl tetrahydronaphthalene 62065 0.5

Anthracene 34221 0.5

9,10-Anthraquinone 62066 0.5

Benz[a]pyrene 34248 0.5

Benzophenone 62067 0.5

Bromacil 04029 0.5

3-tert-Butyl-4-hydroxyanisole (BHA) 62059 5.0

Caffeine 50305 0.5

Camphor 62070 0.5

Carbaryl 82680 1.0

Carbazole 62071 0.5

Chlorpyrifos 38933 0.5

Cholesterol 62072 2.0

3-β-Coprostanol 62057 2.0

Cotinine 62005 1.0

p-Cresol 62084 1.0

4-Cumylphenol 62060 1.0

Diazinon 39572 0.5

1,4-Dichlorobenzene 34572 0.5

N,N-diethyl-m-toluamide (DEET) 62082 0.5

2,6-Dimethylnapthalenene 62055 0.5

Fluoranthene 34377 0.5

Hexahydrohexamethylcyclopentabenzopyran 62075 0.5

Indole 62076 0.5

Isoborneol 62077 0.5

Isophorone 34409 0.5

Isoquinoline 62079 0.5

d-Limonene 62073 0.5

Menthol 62080 0.5

Metalaxyl 50359 0.5

Compound Parameter 

code LRL

5-Methyl-1(H)-benzotriazole 62063 2.0

3-Methyl-1-indole 62058 1.0

1-Methylnaphthalene 62054 0.5

2-Methylnaphthalene 62056 0.5

Methyl salicylate 62081 0.5

Metolachlor 39415 0.5

Naphthalene 34443 0.5

4-Nonylphenol (total) 62085 5.0

4-Nonylphenol diethoxylates 62083 5.0

4-n-Octylphenol 62061 1.0

4-tert-Octylphenol 62062 1.0

4-Octylphenol diethoxylates 61705 1.0

4-octylphenol monothoxylates 61706 1.0

Phenanthrene 34462 0.5

Phenol 34466 0.5

Prometon 04037 0.5

Pyrene 34470 0.5

β-Sitosterol 62068 2.0

β-Stigmastanol 62086 2.0

Tetrachloroethene 34476 0.5

Tribromomethane 34288 0.5

Tributyl phosphate 62089 0.5

Triclosan 62090 1.0

Triethylcitrate 62091 0.5

Triphenyl phosphate 62092 0.5

Tri(2-butoxyethyl) phosphate 62093 0.5

Tri(2-chloroethyl) phosphate 62087 0.5

Tri(dichloroisopropyl) phosphate 62088 0.5

Caffeine-C13, surrogate 99584 percent 

Decafluorobiphenyl, surrogate 99585 percent 

Fluoranthene-d10, surrogate 99586 percent 
36 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 8B. Analytical results for anthropogenic organic indicator compounds detected in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, from Sweetwater Reservoir watershed, San Diego County, California. [See table 1 for site-identification numbers. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting levels are listed on table 7A. Concentrations are given in micrograms per liter (μg/L), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Benzophenone (62067) Caffeine (50305) Camphor (62070) Cholesterol (62072) 3-β- Coprostanol (62057)

p-Cresol 

(62084)

N,N-diethylm-toluamide 

(DEET) 

(62082)

Isophorone 

(34409)

4-

Nonylphenol 

(total) 

(62085)

Phenol 

(34466)

β-Sitosterol 

(62068)

βStigmastanol 

(62086)

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0

—

—

— E1.4

—

— E0.11

— E1.2 E0.26

—

—

12/16/2003 12:00 4.0

—

—

—

—

—

—

—

—

—

—

—

—

02/17/2004 15:40 5.0

—

—

—

—

—

—

—

—

— 0.57

—

—

04/13/2004 11:20 2.0

— E0.05

—

—

—

— E0.03 E0.03

— E0.28

—

—

Sweetwater Reservoir center of minimum pool (SWR03)

02/17/2004 16:40 6.0

—

—

— E0.90 E0.53

—

—

—

— E0.21 E0.6 E0.77

04/13/2004 12:10 2.0

— E0.05

—

—

—

— E0.03 E0.03

— 0.53

—

—

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na

—

—

—

—

—

—

—

— E1.2

—

—

—

12/17/2003 13:50 na

—

—

—

—

—

—

—

—

—

—

—

—

02/18/2004 11:40 na

—

—

—

—

—

—

—

—

—

—

—

—

04/14/2004 09:30 na

—

— E0.01 E1.3 E0.79

— E0.03 E0.02

—

—

— E1.4

Perdue Treatment Plant—imported raw water at Sweetwater Reservoir (SWR09)

10/15/2003 13:00 na

—

—

—

—

— E0.02

—

— E1.2 1.3

—

—

12/17/2003 13:30 na

—

—

—

—

—

—

—

—

—

—

—

—

02/18/2004 12:00 na E0.14

—

—

—

—

—

—

—

—

—

—

—

04/14/2004 12:20 na

—

—

—

—

—

—

—

—

— E0.25

—

—

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1

—

—

—

—

—

—

—

— E1.2 E0.25

—

—

02/18/2004 15:10 0.1

—

—

—

—

—

—

—

—

—

—

—

—

04/14/2004 10:20 0.1

—

— E0.01 E1.0

—

— E0.02

—

— E0.26

—

—
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 37

Table 8B. Analytical results for anthropogenic organic indicator compounds detected in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, from Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification numbers. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Laboratory reporting levels are listed on table 7A. Concentrations are given in micrograms per Liter (μg/L), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Tetrachloroethene 

(34476)

Tribromomethane 

(34288)

Tributyl 

phosphate 

(62089)

Tri(2-chloroethyl) 

phosphate 

(62087)

Tri(dichloroisopropyl) 

phosphate 

(62088)

Caffiene-13C, 

surrogate

(percent) 

(99584) 

Decafluorobiphenyl, 

surrogate 

(percent)

(99585) 

Fluoranthened10, 

surrogate

(percent) 

(99586) 

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0

— E0.06

— E0.12

— 113 79.2 117

12/16/2003 12:00 4.0

— E0.10

—

—

— 121 95.8 125

02/17/2004 15:40 5.0

— E0.12

— E0.11

— 113 66.7 100

04/13/2004 11:20 2.0

— E0.04

— E0.33 E0.11 117 83.3 117

Sweetwater Reservoir center of minimum pool (SWR03)

02/17/2004 16:40 6.0

— E0.07

— E0.09

— 108 83.3 95.8

04/13/2004 12:10 2.0

— E0.04

— E0.10 E0.09 122 82.6 122

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

10/15/2003 12:40 na

— E16 

—

—

— 104 75.0 104

12/17/2003 13:50 na

— E31

—

—

— 114 90.9 118

02/18/2004 11:40 na

— E49

—

—

— 108 84.0 96.0

04/14/2004 09:30 na E0.01 E7.0 E0.04

— E0.07 109 86.4 109

Perdue Treatment Plant—imported raw water at Sweetwater Reservoir (SWR09)

10/15/2003 13:00 na

—

—

—

—

— 104 70.8 100

12/17/2003 13:30 na

—

—

—

—

— 113 78.3 113

02/18/2004 12:00 na

—

—

—

—

— 104 87.5 95.8

04/14/2004 12:20 na

— E0.05

—

—

— 118 81.8 118

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1

—

—

—

—

— 108 80.0 108

02/18/2004 15:10 0.1

—

—

—

—

— 108 79.2 100

04/14/2004 10:20 0.1

—

—

—

— E0.08 118 86.4 123
38 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California. Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Aluminum (01105) Antimony (01097) Barium (01007) Beryllium (01012) Cadmium (01027) Chromium (01034) Cobalt (01037) Copper (01042) Lead (01051) Lithium (01132) [LRL] [2,4,6] [0.2, 0.14, 0.4] [0.2, 0.6, 0.4] [0.06, 0.04, 0.02] [0.04, 0.18, 0.14, 0.06] [0.04, 0.6, 0.4] [0.04, 0.1] [0.6, 1.2, 4] [0.06, 0.1] [0.6, 0.4] Sweetwater Reservoir near pump tower (SWR01) 10/14/2003 13:30 4.0 48.9 E0.156 79.3

—

—

— 0.435 2.52 0.080 17.7

12/16/2003 12:00 4.0 206 E0.163 84.1

— E0.03 E0.436 0.609 4.09 0.229 21.6

02/17/2004 15:40 5.0 33.2 E0.167 67.6

—

—

— 0.378 2.70

— 20.7

04/13/2004 11:20 2.0 20.5 E0.174 68.7

— E0.04

— 0.373 3.30 0.070 19.6

07/13/2004 13:30 2.0 28.9 E0.154 64.7

—

—

— 0.356 2.97 E0.05 21.4

10/12/2004 13:00 3.0 111 E0.184 69.5

—

—

— 0.465 3.17 0.179 19.9

01/12/2005 11:30 6.0 515 E0.167 71.1

—

— E0.591 0.730 4.96 0.603 13.5

04/12/2005 13:10 3.0 50.2 E0.184 50.5

—

—

— 0.525 3.42 0.070 8.43

10/11/2005 11:00 2.0 22.3 0.479 46.4

— E0.02

— 0.469 2.86 E0.03 6.98

07/12/2005 10:50 5.0 41.3 E0.160 46.4

—

— 0.130 0.120 0.64 0.090 8.25

01/10/2006 11:20 4.0 65.8 0.209 77.8 E0.03 E0.03 0.100 0.342 3.10 0.141 9.16

01/10/2006 11:30 0.1 77.8 0.216 74.3

—

— 0.060 0.400 3.15 0.118 8.65

04/07/2006 11:20 4.0 32.9 E0.108 49.6

—

—

— 0.311 2.29

— 4.76

04/07/2006 11:30 0.1 26.3 E0.112 49.9

—

—

— 0.295 3.03

— 4.66

07/11/2006 11:30 2.0 14.0 E0.174 50.3

—

— 0.190 0.247 4.63 E0.04 4.45

07/11/2006 11:40 0.1 15.0 E0.169 51.0

—

— 0.280 0.248 4.68 E0.05 4.50

10/11/2006 11:00 0.1 34.1 0.209 30.8

— E0.01 E0.350 0.182 1.53 0.101 4.93

10/11/2006 11:20 4.0 41.4 E0.193 33.9

—

— E0.320 0.199 4.27 0.100 4.87

01/09/2007 10:40 5.0 105 0.228 71.2

— E0.02 E0.370 0.319 2.30 0.200 5.53

01/09/2007 10:50 0.1 64.3 0.263 72.5 E0.05 0.07

— 0.351 2.32 0.229 7.61

04/10/2007 11:30 0.1 26.9 0.220 70.8

— E0.01

— 0.231 2.31 E0.04 8.18

04/10/2007 11:40 3.0 37.2 0.230 71.2

— E0.01

— 0.240 2.66 0.060 8.31

07/10/2007 10:30 0.1 58.5 0.260 67.8

— E0.01

— 0.090 1.56 0.080 12.8

07/10/2007 10:40 3.0 59.7 0.320 71.5 E0.03 0.02 E0.510 0.160 2.94 0.090 13.8

10/09/2007 11:30 0.1 46.0 0.325 36.7

— E0.01

— 0.080 E0.87 0.090 11.3

10/09/2007 11:40 3.0 58.4 0.290 61.5

—

— E0.212 0.103 7.12 0.106 11.1

10/25/2007 12:30 0.1 69.4 0.315 73.4

— E0.01

— 0.134 E0.92 0.140 11.1

01/08/2008 10:30 4.0 132 E0.137 85.0

— E0.01 E0.219 0.167 E0.68 0.290 10.1

01/08/2008 10:45 0.1 164 E0.139 89.1

—

— E0.301 0.185 E0.90 0.309 10.0

04/15/2008 11:30 0.1 37.8 0.146 65.5

— E0.01 E0.246 0.140 E1.2 E0.04 5.01

04/15/2008 11:33 3.0 41.6 0.158 66.1

— 0.02

— 0.152 1.24 E0.03 5.02

07/15/2008 10:30 0.1 35.0 E0.107 55.3

—

—

— 0.07 3.19 0.126 6.56
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 39

Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] 

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Manganese 

(01055)

Molybdenum 

(01062)

Nickel 

(01067)

Selenium 

(01147)

Silver 

(01077)

Strontium 

(01082)

Thallium 

(01059)

Uranium 

(28011)

Zinc 

(01092)

[LRL] [0.2, 0.6, 0.8, 0.4] [0.2, 0.06, 0.08] [0.16, 0.12, 2] [0.08, 0.12, 0.10 ] [0.16, 0.02, 0.06] [0.2, 1.6] [0.18, 0.08, 0.12] [0.012, 0.02] [2]

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0 305 4.55 2.95 0.54

— 762

— 4.59 E1.62

12/16/2003 12:00 4.0 134 4.96 3.37 1.14

— 768

— 5.24 2.49

02/17/2004 15:40 5.0 18.1 4.61 2.39 0.90

— 780

— 4.25

—

04/13/2004 11:20 2.0 2.88 4.33 2.03 0.78

— 712

— 4.27

—

07/13/2004 13:30 2.0 13.3 4.47 2.22 0.79

— 772

— 4.27 E1.85

10/12/2004 13:00 3.0 159 4.50 2.46 1.46

— 782

— 4.60 2.63

01/12/2005 11:30 6.0 57.1 3.76 1.69 1.45

— 597

— 4.09 5.56

04/12/2005 13:10 3.0 14.8 3.76 1.82 1.56

— 437

— 3.43 2.06

10/11/2005 11:00 2.0 16.6 3.94 3.13 1.22

— 454

— 3.33 E1.80

07/12/2005 10:50 5.0 137 3.27 0.61 0.35

— 500

— 3.85 5.79

01/10/2006 11:20 4.0 146 3.93 1.42 0.34

— 587

— 4.82 E1.78

01/10/2006 11:30 0.1 127 4.14 1.56 0.37

— 572

— 4.82 E1.36

04/07/2006 11:20 4.0 12.0 3.49 1.72 0.38

— 404

— 3.46

—

04/07/2006 11:30 0.1 9.69 3.51 2.00 0.36

— 402

— 3.48

—

07/11/2006 11:30 2.0 6.40 3.98 1.16 0.38

— 433

— 3.85

—

07/11/2006 11:40 0.1 7.03 3.87 1.20 0.38

— 432

— 3.82

—

10/11/2006 11:00 0.1 86.3 3.38 0.53 0.26

— 446

— 3.61

—

10/11/2006 11:20 4.0 105 3.44 0.61 0.30

— 452

— 3.62 5.12

01/09/2007 10:40 5.0 140 3.99 0.99 0.37

— 477

— 4.23 E1.64

01/09/2007 10:50 0.1 191 4.07 1.06 0.47

— 499

— 4.22 E1.35

04/10/2007 11:30 0.1 10.8 4.40 1.48 0.48

— 502

— 4.35

—

04/10/2007 11:40 3.0 15.1 4.40 1.45 0.49

— 509

— 4.40 E1.98

07/10/2007 10:30 0.1 18.6 4.69 0.64 0.61

— 580

— 4.31

—

07/10/2007 10:40 3.0 26.9 4.64 0.82 0.61

— 602

— 4.39 E1.05

10/09/2007 11:30 0.1 238 3.87 0.62 0.37

— 590

— 3.49

—

10/09/2007 11:40 3.0 273 3.79 0.61 0.37

— 591

— 3.54

—

10/25/2007 12:30 0.1 105 4.34 0.75 0.37

— 632

— 4.46

—

01/08/2008 10:30 4.0 246 4.99 0.74 0.39

— 641

— 4.94

—

01/08/2008 10:45 0.1 200 4.96 0.77 0.42

— 641

— 5.01 E1.01

04/15/2008 11:30 0.1 8.02 4.82 0.68 0.37

— 474

— 4.91

—

04/15/2008 11:33 3.0 8.80 4.72 0.68 0.38

— 476

— 4.89

—

07/15/2008 10:30 0.1 21.1 4.99 0.56 0.33

— 537

— 5.40

—
40 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Aluminum (01105) Antimony (01097) Barium (01007) Beryllium (01012) Cadmium (01027) Chromium (01034) Cobalt (01037) Copper (01042) Lead (01051) Lithium (01132) [LRL] [2,4,6] [0.2, 0.14, 0.4] [0.2, 0.6, 0.4] [0.06, 0.04, 0.02] [0.04, 0.18, 0.14, 0.06] [0.04, 0.6, 0.4] [0.04, 0.1] [0.6, 1.2, 4] [0.06, 0.1] [0.6, 0.4] Sweetwater Reservoir near pump tower (SWR01)—Continued 07/15/2008 10:32 2.0 33.5 0.154 52.2

—

—

— 0.06 3.30 E0.05 6.68

10/14/2008 12:20 0.1 22.4 E0.229 63.6

—

— E0.223 E0.09

— E0.08 6.83

10/14/2008 12:23 3.0 28.7 E0.236 88.7

—

— E0.270 E0.09

— E0.09 6.82

01/13/2009 11:10 0.1 63.6 E0.228 89.3

—

— E0.217 0.107

— 0.109 14.4

01/13/2009 11:12 2.0 65.6 E0.228 89.5

—

— E0.248 0.109

— E0.08 14.6

04/14/2009 11:50 0.1 33.0

— 88.1

—

—

— E0.06

—

— 21.2

04/14/2009 11:52 2.0 39.1

— 86.5

—

—

— E0.09

—

— 20.6

07/07/2009 10:40 0.1 10.0 E0.219 91.8

—

— E0.328

—

—

— 26.2

07/07/2009 10:43 3.0 16.8

— 77.5

—

—

—

—

— E0.06 19.8

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:10 4.0 3.09 E0.191 62.3

—

— E0.428 0.374 2.91

— 17.4

12/16/2003 13:00 4.0 210 E0.170 79.8

— E0.03

— 0.561 4.14 0.227 21.2

02/17/2004 16:40 6.0 41.5 E0.135 67.3

— E0.02

— 0.379 2.60

— 22.5

04/13/2004 12:10 2.0 50.6 E0.169 69.7

— E0.02

— 0.422 3.34 0.109 20.1

10/12/2004 13:40 5.0 154 E0.180 71.2

—

—

— 0.484 2.96 0.242 19.7

01/12/2005 12:10 7.0 301 E0.166 72.7

—

— E0.575 0.599 4.75 0.360 14.5

07/12/2005 11:50 2.0 30.1 0.266 47.6

—

—

— 0.387 2.97 E0.06 7.93

10/11/2005 11:30 6.0 50.3 E0.167 46.4

—

— 0.140 0.311 1.75 0.08 9.05

01/10/2006 12:00 5.0 119 0.212 73.3

—

— 0.290 0.427 2.54 0.167 8.29

01/10/2006 12:10 0.1 84.5 0.208 76.4

—

— 0.290 0.419 2.51 0.136 8.51

04/07/2006 11:50 4.0 31.8 E0.174 50.2

—

— 0.120 0.311 2.18

— 4.77

04/07/2006 12:00 0.1 34.3 E0.183 50.1

—

— 0.100 0.304 2.22

— 4.86

07/11/2006 12:00 3.0 18.5 E0.176 50.3

—

— 0.160 0.252 4.68 0.070 4.60

07/11/2006 12:10 0.1 21.6 E0.168 50.7

—

— 0.170 0.238 4.45 E0.04 4.47

10/11/2006 11:30 0.1 35.2 E0.165 31.0

—

—

— 0.138 1.59 0.123 5.44

10/11/2006 11:50 4.0 49.7 E0.185 34.1

— E0.01 E0.400 0.192 1.70 0.114 4.83

01/09/2007 11:10 5.0 119 0.234 70.3

— E0.01 E0.330 0.313 2.18 0.208 5.56

01/09/2007 11:20 0.1 97.6 0.206 80.2

— 0.02

— 0.326 2.35 0.218 5.44

04/10/2007 12:00 0.1 54.1 0.220 69.6

— E0.01

— 0.253 2.04 E0.05 7.62

04/10/2007 12:10 3.0 45.6 0.250 71.4

— E0.01

— 0.245 2.49 E0.04 8.37

07/10/2007 11:10 0.1 55.0 0.250 67.1

— 0.02

— 0.09 1.54 0.070 12.5

07/10/2007 11:20 3.0 65.0 0.290 67.8

— 0.02

— 0.100 1.59 0.090 12.7
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 41

Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] 

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Manganese 

(01055)

Molybdenum 

(01062)

Nickel 

(01067)

Selenium 

(01147)

Silver 

(01077)

Strontium 

(01082)

Thallium 

(01059)

Uranium 

(28011)

Zinc 

(01092)

[LRL] [0.2, 0.6, 0.8, 0.4] [0.2, 0.06, 0.08] [0.16, 0.12, 2] [0.08, 0.12, 0.10 ] [0.16, 0.02, 0.06] [0.2, 1.6] [0.18, 0.08, 0.12] [0.012, 0.02] [2]

Sweetwater Reservoir near pump tower (SWR01)—Continued

07/15/2008 10:32 2.0 20.2 4.96 0.64 0.37

— 522

— 5.28

—

10/14/2008 12:20 0.1 537 3.83 0.59 0.30

— 564

— 5.15 58.3

10/14/2008 12:23 3.0 521 3.84 0.64 0.29

— 566

— 5.18 E1.31

01/13/2009 11:10 0.1 207 4.93 1.03 0.53

— 653

— 5.23

—

01/13/2009 11:12 2.0 194 4.91 0.99 0.53

— 650

— 5.20

—

04/14/2009 11:50 0.1 20.1 5.12 0.70 0.69

— 765

— 5.12

—

04/14/2009 11:52 2.0 21.7 4.99 0.71 0.67

— 768

— 5.01

—

07/07/2009 10:40 0.1 13.8 4.93 0.83 1.04

— 839

— 4.92

—

07/07/2009 10:43 3.0 11.4 5.15 0.58 0.68

— 788

— 5.31

—

Sweetwater Reservoir center of minimum pool (SWR03)

10/14/2003 14:10 4.0 46.0 4.50 2.25 1.03

— 770

— 4.56 3.84

12/16/2003 13:00 4.0 111 4.77 3.26 1.08

— 745

— 5.06 E1.92

02/17/2004 16:40 6.0 18.9 4.54 2.40 0.95

— 772

— 4.21

—

04/13/2004 12:10 2.0 9.54 4.43 2.11 0.82

— 718

— 4.32

—

10/12/2004 13:40 5.0 172 4.38 2.35 1.32

— 775

— 4.55 2.24

01/12/2005 12:10 7.0 41.9 4.10 1.58 1.52

— 646

— 4.25 2.99

07/12/2005 11:50 2.0 19.3 4.03 2.96 1.09

— 463

— 3.91 2.35

10/11/2005 11:30 6.0 139 3.27 1.89 0.29

— 526

— 3.22 E1.98

01/10/2006 12:00 5.0 127 4.07 1.68 0.33

— 564

— 4.82 E1.45

01/10/2006 12:10 0.1 147 4.13 1.66 0.35

— 573

— 4.91 E1.46

04/07/2006 11:50 4.0 12.0 3.57 1.37 0.36

— 405

— 3.46

—

04/07/2006 12:00 0.1 11.2 3.61 1.32 0.34

— 404

— 3.50

—

07/11/2006 12:00 3.0 6.91 4.03 1.09 0.41

— 429

— 3.87

—

07/11/2006 12:10 0.1 7.55 3.98 1.10 0.37

— 431

— 3.84

—

10/11/2006 11:30 0.1 92.90 3.27 E0.15 0.24

— 455

— 4.24 2.58

10/11/2006 11:50 4.0 107 3.39 0.58 0.28

— 445

— 3.63 4.66

01/09/2007 11:10 5.0 134 4.00 0.93 0.39

— 479

— 4.25 E1.55

01/09/2007 11:20 0.1 198 4.01 0.96 0.59

— 483

— 4.25 E1.49

04/10/2007 12:00 0.1 20.1 4.38 1.83 0.41

— 508

— 4.33

—

04/10/2007 12:10 3.0 17.9 4.43 1.53 0.43

— 508

— 4.33

—

07/10/2007 11:10 0.1 17.6 4.70 0.65 0.59

— 570

— 4.43

—

07/10/2007 11:20 3.0 17.9 4.79 0.63 0.55

— 580

— 4.45

—
42 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Aluminum (01105) Antimony (01097) Barium (01007) Beryllium (01012) Cadmium (01027) Chromium (01034) Cobalt (01037) Copper (01042) Lead (01051) Lithium (01132) [LRL] [2,4,6] [0.2, 0.14, 0.4] [0.2, 0.6, 0.4] [0.06, 0.04, 0.02] [0.04, 0.18, 0.14, 0.06] [0.04, 0.6, 0.4] [0.04, 0.1] [0.6, 1.2, 4] [0.06, 0.1] [0.6, 0.4] Sweetwater Reservoir center of minimum pool (SWR03)—Continued 10/09/2007 12:10 0.1 59.2 0.298 39.1

— 0.01

— 0.103 E0.91 0.106 11.2

10/09/2007 12:20 5.0 67.4 0.274 52.4

—

— E0.243 0.096 5.49 0.109 10.9

10/25/2007 12:40 0.1 88.2 0.329 72.9

— 0.02

— 0.141 E0.97 0.156 11.1

01/08/2008 11:10 0.1 151 0.152 82.9

—

— E0.237 0.175 E0.73 0.292 10.3

01/08/2008 11:20 5.0 206 E0.130 89.6

— E0.01 E0.393 0.203 E0.95 0.353 10.2

04/15/2008 12:10 0.1 37.0 0.149 64.8

— E0.01

— 0.151 E1.2

— 4.98

04/15/2008 12:13 3.0 39.7 0.167 65.3

— 0.02

— 0.144 1.34 0.070 5.02

07/15/2008 11:10 0.1 47.8 0.182 52.7

— E0.01

— 0.080 3.31 0.060 6.54

07/15/2008 11:12 2.0 41.4 0.172 52.6

— E0.01

— 0.070 3.55 0.080 6.54

10/14/2008 13:00 0.1 30.4 E0.238 75.4

—

— E0.229 E0.09

— E0.07 6.87

10/14/2008 13:04 4.0 57.9 E0.236 75.0

—

— E0.263 E0.09

— 0.106 6.71

01/13/2009 11:50 0.1 73.6 E0.224 87.8

—

— E0.227 0.121

— E0.09 13.9

01/13/2009 11:52 2 82.4 E0.219 89.3

—

— E0.231 0.115

— E0.10 14.2

04/14/2009 12:20 0.1 33.6

— 85.2

—

—

— E0.06

—

— 20.3

04/14/2009 12:23 3.0 33.8

— 86.3

—

—

— E0.09

—

— 20.6

07/07/2009 11:33 3.0 20.9

— 76.9

—

—

— E0.05

—

— 19.4

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

04/13/2004 12:40 1.0 155 E0.169 67.9

—

— E0.538 0.534 3.55 0.193 19.6

04/07/2006 12:20 0.1 49.4 E0.181 50.4

—

— 0.070 0.358 3.13 E0.04 4.85

07/07/2009 11:50 0.1 184 E0.200 79.0

—

— E0.262 0.135

— 0.202 19.8

Perdue Treatment Plant—finished water (SWR08)

10/15/2003 12:40 na

— E0.131 93.5

—

—

— 0.249 2.34

— 30.3

12/17/2003 13:50 na E1.160 E0.156 68.1

— E0.02

— 0.421 3.39

— 23.4

02/18/2004 11:40 na E1.115 E0.110 67.4

—

—

— 0.345 2.61

— 22.6

04/14/2004 09:30 na E1.303 E0.166 64.6

—

—

— 0.331 3.03

— 19.6

07/13/2004 15:10 na

— E0.124 61.5

—

—

— 0.261 2.86

— 24.2

10/12/2004 15:00 na E1.077 E0.149 77.9

—

—

— 0.262 3.24

— 24.5

01/12/2005 15:00 na E1.690 E0.188 105

— E0.02

— 0.316 7.02 E0.04 28.7

04/13/2005 09:30 na E1.953 E0.141 45.3

—

—

— 0.698 4.22

— 8.50

07/12/2005 14:10 na E1.684 0.235 44.5

—

—

— 0.698 3.54 0.250 8.05

10/11/2005 13:30 na E1.038 0.203 31.2

—

— 0.080 0.300 1.70

— 8.65

01/10/2006 15:00 na

— E0.194 57.4

—

— 0.180 0.309 3.40

— 8.58
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 43

Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] 

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Manganese 

(01055)

Molybdenum 

(01062)

Nickel 

(01067)

Selenium 

(01147)

Silver 

(01077)

Strontium 

(01082)

Thallium 

(01059)

Uranium 

(28011)

Zinc 

(01092)

[LRL] [0.2, 0.6, 0.8, 0.4] [0.2, 0.06, 0.08] [0.16, 0.12, 2] [0.08, 0.12, 0.10 ] [0.16, 0.02, 0.06] [0.2, 1.6] [0.18, 0.08, 0.12] [0.012, 0.02] [2]

Sweetwater Reservoir center of minimum pool (SWR03)—Continued

10/09/2007 12:10 0.1 239 3.87 0.55 0.40

— 583

— 3.50

—

10/09/2007 12:20 5.0 259 3.82 1.40 0.35

— 581

— 3.50

—

10/25/2007 12:40 0.1 111 4.23 0.62 0.37

— 628

— 4.39

—

01/08/2008 11:10 0.1 249 4.94 0.90 0.40

— 642

— 5.08

—

01/08/2008 11:20 5.0 201 5.00 0.80 0.42

— 638

— 5.00 E1.09

04/15/2008 12:10 0.1 8.21 4.74 0.66 0.37

— 474

— 4.77

—

04/15/2008 12:13 3.0 8.43 4.71 0.81 0.36

— 469

— 4.78

—

07/15/2008 11:10 0.1 18.8 4.95 0.60 0.36

— 524

— 5.29

—

07/15/2008 11:12 2.0 18.9 4.96 0.65 0.36

— 529

— 5.29

—

10/14/2008 13:00 0.1 520 3.78 0.54 0.30

— 568

— 5.19

—

10/14/2008 13:04 4.0 448 3.86 0.64 0.28

— 556

— 5.09

—

01/13/2009 11:50 0.1 200 4.91 0.77 0.51

— 639

— 5.17

—

01/13/2009 11:52 2 196 4.89 0.79 0.54

— 637

— 5.14

—

04/14/2009 12:20 0.1 19.3 5.01 0.66 0.70

— 747

— 5.00

—

04/14/2009 12:23 3.0 20.3 4.97 0.66 0.73

— 778

— 5.10

—

07/07/2009 11:33 3.0 12.5 5.34 0.48 0.63

— 773

— 5.27

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

04/13/2004 12:40 1.0 25.5 4.40 2.17 0.82

— 708

— 4.39

—

04/07/2006 12:20 0.1 19.0 3.57 1.54 0.40

— 403

— 3.56

—

07/07/2009 11:50 0.1 49.1 5.37 0.61 0.68

— 785

— 5.49

—

Perdue Treatment Plant—finished water (SWR08)

10/15/2003 12:40 na 0.69 3.92 2.60 1.53

— 758

— 3.42 E1.01

12/17/2003 13:50 na 4.75 4.85 3.62 1.37

— 765

— 4.94 E1.26

02/18/2004 11:40 na 0.74 4.47 2.72 1.09

— 777

— 4.07

—

04/14/2004 09:30 na 1.03 4.37 2.52 0.50

— 710

— 3.99

—

07/13/2004 15:10 na 1.58 4.30 2.42 0.78

— 781

— 3.69 E1.52

10/12/2004 15:00 na 1.67 3.95 3.30 1.49

— 657

— 3.24

—

01/12/2005 15:00 na 2.05 4.44 1.93 2.10

— 781

— 3.77 E1.83

04/13/2005 09:30 na 52.7 3.62 3.40 2.10

— 439

— 2.59 E1.20

07/12/2005 14:10 na 77.3 3.87 4.02 0.99

— 463

— 3.48 E1.40

10/11/2005 13:30 na 28.8 3.31 2.09 0.23

— 524

— 3.06

—

01/10/2006 15:00 na 2.21 3.78 2.64 0.21

— 554

— 4.16 E1.13
44 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Aluminum (01105) Antimony (01097) Barium (01007) Beryllium (01012) Cadmium (01027) Chromium (01034) Cobalt (01037) Copper (01042) Lead (01051) Lithium (01132) [LRL] [2,4,6] [0.2, 0.14, 0.4] [0.2, 0.6, 0.4] [0.06, 0.04, 0.02] [0.04, 0.18, 0.14, 0.06] [0.04, 0.6, 0.4] [0.04, 0.1] [0.6, 1.2, 4] [0.06, 0.1] [0.6, 0.4] Perdue Treatment Plant—finished water (SWR08)—Continued 04/07/2006 14:10 na E1.03 E0.163 73.6

—

— 0.070 0.156 2.68

— 18.9

07/11/2006 14:50 na 7.77 0.263 89.6

—

— 0.180 0.154 12.4 E0.05 22.9

10/11/2006 13:50 na

— E0.176 23.1

—

— E0.300 0.191 2.63

— 4.83

01/09/2007 13:30 na

— 0.225 72.8

— E0.01

— 0.151 2.33

— 21.0

04/11/2007 08:30 na E1.99 0.230 82.5

— E0.01

— 0.154 2.37

— 23.3

07/10/2007 13:10 na

— 0.310 102

—

—

— 0.060 E1.06

— 31.2

10/09/2007 15:10 na

— 0.232 15.3

—

—

— 0.040 1.56

— 11.0

01/08/2008 14:00 na

— 0.172 90.6

—

— 0.407

— E0.69

— 28.9

04/15/2008 13:30 na

— 0.323 112

— E0.01 0.447 E0.04 E1.11

— 31.1

07/15/2008 14:10 na

— E0.128 45.8

—

—

— 0.060 2.67

— 6.53

10/15/2008 14:00 na

—

— 26.8

—

— E0.317

—

—

— 7.05

01/13/2009 14:00 na

— E0.297 119

—

— E0.342 0.114

— E0.06 37.4

04/14/2009 14:30 na

— E0.272 124

—

—

—

—

—

— 38.6

07/07/2009 14:00 na

— E0.260 107

—

— E0.285

—

—

— 36.0

Perdue Treatment Plant—imported raw water (SWR09)

10/15/2003 13:00 na 13.0 E0.165 95.7

—

—

— 0.231 6.61 0.204 29.4

12/17/2003 13:30 na 92.3 E0.164 112

— E0.03

— 0.441 9.49 0.315 37.1

02/18/2004 12:00 na 21.7 E0.146 88.0

—

—

— 0.267 3.06 E0.04 28.1

04/14/2004 12:20 na 14.7 E0.185 88.6

—

— E0.496 0.233 4.20 E0.05 25.1

10/12/2004 16:30 na 18.8 1.56 82.3

—

—

— 0.292 38.3 95.8 24.5

01/12/2005 14:40 na 628 E0.196 117

— E0.03 0.914 0.626 18.6 0.462 28.2

04/13/2005 08:40 na 40.1 0.201 69.5

—

—

— 0.260 6.30 0.108 18.3

07/12/2005 14:00 na 10.1 0.349 119

—

—

— 0.218 4.99

— 33.7

10/11/2005 13:50 na 2.03 0.236 104

—

— 0.090 0.172 18.3

— 32.1

01/10/2006 14:50 na 14.5 0.278 112

—

— 0.260 0.210 4.00

— 29.0

04/07/2006 14:20 na 16.6 0.263 79.0

—

— 0.070 0.153 5.22

— 18.7

07/11/2006 14:40 na E1.68 E0.149 44.4

—

— 0.170 0.225 3.58

— 4.60

10/11/2006 13:40 na 6.91 0.234 80.6

— E0.01

— 0.112 6.83 E0.03 19.6

01/09/2007 13:20 na 21.7 0.24 77.3

— E0.01

— 0.150 4.93 E0.04 20.7

04/11/2007 08:50 na 16.3 0.27 87.6

— E0.01

— 0.160 10.9 0.120 23.1

07/10/2007 13:00 na 4.99 0.33 106

— 0.02

— E0.03 9.41 0.060 29.2

10/09/2007 15:00 na 4.94 0.228 62.3

— E0.01

— E0.02 15.6 E0.04 20.0
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 45

Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] 

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Manganese 

(01055)

Molybdenum 

(01062)

Nickel 

(01067)

Selenium 

(01147)

Silver 

(01077)

Strontium 

(01082)

Thallium 

(01059)

Uranium 

(28011)

Zinc 

(01092)

[LRL] [0.2, 0.6, 0.8, 0.4] [0.2, 0.06, 0.08] [0.16, 0.12, 2] [0.08, 0.12, 0.10 ] [0.16, 0.02, 0.06] [0.2, 1.6] [0.18, 0.08, 0.12] [0.012, 0.02] [2]

Perdue Treatment Plant—finished water (SWR08)—Continued

04/07/2006 14:10 na 1.72 3.58 1.75 0.67

— 568

— 2.91 6.02

07/11/2006 14:50 na 2.29 4.20 1.07 1.01

— 676

— 3.17

—

10/11/2006 13:50 na 39.3 3.42 1.73 0.23

— 449

— 3.21

—

01/09/2007 13:30 na E0.52 3.53 1.68 0.65

— 594

— 3.09

—

04/11/2007 08:30 na E0.47 4.16 1.87 0.82

— 624

— 3.41

—

07/10/2007 13:10 na

— 4.73 0.98 1.10

— 763

— 4.08

—

10/09/2007 15:10 na 2.23 3.83 2.60 0.32

— 574

— 3.12

—

01/08/2008 14:00 na

— 4.44 1.30 1.07

— 741

— 3.81

—

04/15/2008 13:30 na

— 5.30 0.93 1.36

— 819

— 4.99

—

07/15/2008 14:10 na 3.59 5.05 1.30 0.23

— 508

— 4.92 E1.27

10/15/2008 14:00 na 24.8 3.62 1.40 0.28

— 561

— 4.28

—

01/13/2009 14:00 na 0.44 5.41 1.60 1.33

— 944

— 4.90

—

04/14/2009 14:30 na

— 5.42 1.10 1.47

— 1,010

— 4.90

—

07/07/2009 14:00 na

— 4.71 0.84 1.27

— 863

— 4.50

—

Perdue Treatment Plant—imported raw water (SWR09)

10/15/2003 13:00 na 3.75 3.85 1.90 1.45

— 758

— 3.64 4.65

12/17/2003 13:30 na 28.0 4.51 3.71 2.00

— 849

— 4.34 5.48

02/18/2004 12:00 na 2.00 3.84 2.29 1.43

— 722

— 3.59

—

04/14/2004 12:20 na 1.61 3.76 2.28 1.16

— 687

— 3.67

—

10/12/2004 16:30 na 6.31 3.95 3.92 1.20

— 652

— 3.56 8.43

01/12/2005 14:40 na 14.0 4.49 2.01 1.96

— 762

— 3.98 3.79

04/13/2005 08:40 na 2.62 3.72 2.44 1.78

— 520

— 3.04 E1.29

07/12/2005 14:00 na 0.99 4.89 3.21 1.91

— 871

— 4.17

—

10/11/2005 13:50 na 1.00 4.80 1.94 1.10

— 845

— 3.41 E1.39

01/10/2006 14:50 na 1.37 4.31 1.76 0.94

— 730

— 4.31

—

04/07/2006 14:20 na 2.22 3.56 1.59 0.80

— 564

— 3.17 E1.01

07/11/2006 14:40 na 23.9 3.97 2.26 0.24

— 431

— 3.36

—

10/11/2006 13:40 na 1.33 3.62 1.53 0.83

— 605

— 3.03 E1.54

01/09/2007 13:20 na 2.58 3.59 1.44 0.82

— 600

— 3.39 E1.09

04/11/2007 08:50 na 3.07 4.28 1.91 0.97

— 612

— 3.48 E1.75

07/10/2007 13:00 na 2.70 4.73 0.88 1.18

— 786

— 4.18

—

10/09/2007 15:00 na 4.36 3.43 1.70 0.77

— 568

— 2.63 E1.97
46 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Aluminum (01105) Antimony (01097) Barium (01007) Beryllium (01012) Cadmium (01027) Chromium (01034) Cobalt (01037) Copper (01042) Lead (01051) Lithium (01132) [LRL] [2,4,6] [0.2, 0.14, 0.4] [0.2, 0.6, 0.4] [0.06, 0.04, 0.02] [0.04, 0.18, 0.14, 0.06] [0.04, 0.6, 0.4] [0.04, 0.1] [0.6, 1.2, 4] [0.06, 0.1] [0.6, 0.4] Perdue Treatment Plant—imported raw water (SWR09)—Continued 01/08/2008 14:10 na 20.4 0.168 94.2

— E0.01 E0.209

— 3.55 0.060 29.6

04/15/2008 13:40 na 15.2 0.308 115

— E0.01 0.450 0.050 3.63 E0.03 31.9

07/15/2008 14:00 na E2.73 0.222 110

— E0.01

—

— 2.58

— 34.6

01/13/2009 14:10 na 19.4 E0.291 122

—

—

—

— 6.45 0.103 38.0

04/14/2009 14:20 na 16.9 E0.274 126

—

—

—

— 7.31 0.106 38.9

Sweetwater River at low-flow diversion upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1 E2.27

— 122

—

— E0.458 1.15 5.63

— 5.53

02/18/2004 15:10 0.1 16.8

— 80.0

— E0.03

— 1.16 2.87

— 5.81

04/14/2004 10:20 0.1 87.3 E0.240 88.6

—

—

— 1.12 3.55 0.130 5.11

04/13/2005 10:20 0.1 68.3 E0.123 61.4

— E0.03

— 1.04 3.91 0.123 6.39

07/13/2005 10:00 0.1 107 E0.110 98.5

— 0.06

— 0.990 1.85 0.221 6.06

04/06/2006 13:20 0.1 89.6 0.282 63.5

—

— 0.170 0.715 2.73 0.145 5.13

07/12/2006 12:30 0.1 292

— 109

—

— 0.560 1.10 3.61 0.630 6.27

02/01/2008 13:00 0.1 633 0.100 43.9

— 0.02 0.600 0.538 65.4 0.700 1.7

07/08/2009 11:00 0.1 119

— 117

—

—

— E0.183

— 0.388 5.46

Loveland Reservoir near dam (LLR01)

12/17/2003 10:30 12 54.3

— 55.7

—

—

— 0.325 1.53 E0.06 0.718

02/18/2004 10:50 12 75.9

— 52.5

—

—

— 0.303 1.13 0.060 0.814

01/13/2005 11:20 16 1,190

— 54.5 E0.03

— 0.923 1.06 3.19 1.08 1.17

10/12/2005 11:10 4.0 11.3

— 33.0

—

— 0.170 0.100 E0.48 0.070 2.23

04/06/2006 11:10 5.0 42.5 E0.132 44.0

—

— 0.040 0.257 1.36 0.066 1.74

04/06/2006 11:20 0.1 50.9

— 43.9

—

— 0.150 0.255 1.23 0.083 1.72

07/12/2006 10:30 3.0 13.0

— 42.6

—

— 0.190 0.221 1.11

— 1.38

07/12/2006 10:50 0.1 11.3 E0.100 42.3

—

— 0.190 0.243 1.00 E0.06 1.50

01/10/2007 11:00 0.1 54.9 E0.113 45.1

— E0.01

— 0.188 E1.01 E0.05 1.56

07/11/2007 11:00 3.0 12.7 E0.180 42.0

— E0.01

— 0.060

— E0.04 1.11

01/09/2008 10:50 0.1 56.9

— 52.7

— 0.01

— 0.050

— 0.060 1.23

04/16/2008 11:30 0.1 67.3 E0.102 50.2

—

—

— 0.184

— E0.04 1.49

07/16/2008 11:10 0.1 10.5 E0.079 52.0

— E0.01

— 0.080 E0.95 0.060 1.47

01/14/2009 10:40 0.1 92.3

— 58.0

—

— E0.220 E0.09

— E0.08 1.18

07/08/2009 13:03 3.0 14.0

— 45.8

—

—

— E0.05

—

— 1.12
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 47

Table 9A. Analytical results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, from Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below the compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)] 

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Manganese 

(01055)

Molybdenum 

(01062)

Nickel 

(01067)

Selenium 

(01147)

Silver 

(01077)

Strontium 

(01082)

Thallium 

(01059)

Uranium 

(28011)

Zinc 

(01092)

[LRL] [0.2, 0.6, 0.8, 0.4] [0.2, 0.06, 0.08] [0.16, 0.12, 2] [0.08, 0.12, 0.10 ] [0.16, 0.02, 0.06] [0.2, 1.6] [0.18, 0.08, 0.12] [0.012, 0.02] [2]

Perdue Treatment Plant—imported raw water (SWR09)—Continued

01/08/2008 14:10 na 2.52 4.47 1.20 1.06

— 743

— 4.10

—

04/15/2008 13:40 na 2.67 5.27 0.89 1.28

— 817

— 5.13

—

07/15/2008 14:00 na 2.35 4.92 0.80 1.20

— 885

— 4.73

—

01/13/2009 14:10 na 3.55 5.28 1.30 1.29

— 945

— 4.99

—

04/14/2009 14:20 na 2.32 5.29 1.20 1.45

— 1,020

— 4.91

—

Sweetwater River at low-flow diversion upstream from Sweetwater Reservoir (LFDD)

10/15/2003 11:00 0.1 282 5.63 7.14 2.29

— 854

— 9.68 5.48

02/18/2004 15:10 0.1 127 9.63 6.04 0.78

— 755

— 14.9

—

04/14/2004 10:20 0.1 365 8.51 4.03

—

— 769

— 15.0 E3.33

04/13/2005 10:20 0.1 147 6.89 3.55 4.04

— 511

— 12.5 2.11

07/13/2005 10:00 0.1 484 6.93 6.10 1.68

— 676

— 10.8 2.02

04/06/2006 13:20 0.1 144 6.28 3.06 1.06

— 481

— 12.7 3.26

07/12/2006 12:30 0.1 543 5.31 2.60 0.22

— 681

— 8.50 4.02

02/01/2008 13:00 0.1 64.1 3.70 0.75 0.3

— 248

— 3.21 3.40

07/08/2009 11:00 0.1 272 5.39 0.91

—

— 912

— 10.1 E2.41

Loveland Reservoir near dam (LLR01)

12/17/2003 10:30 12 81.4 2.28 1.96 0.62

— 235

— 2.07

—

02/18/2004 10:50 12 82.5 2.31 1.44 0.44

— 229

— 1.91

—

01/13/2005 11:20 16 40.9 2.18 1.42 1.10

— 179

— 1.83 4.52

10/12/2005 11:10 4.0 7.94 2.31 0.49 0.47

— 183

— 1.36

—

04/06/2006 11:10 5.0 37.2 2.49 1.19 0.33

— 194

— 1.72

—

04/06/2006 11:20 0.1 34.2 2.47 1.25 0.32

— 193

— 1.71 E1.33

07/12/2006 10:30 3.0 4.14 2.82 0.90 0.31

— 211

— 1.85

—

07/12/2006 10:50 0.1 4.16 2.88 0.76 0.32

— 209

— 1.90

—

01/10/2007 11:00 0.1 30.8 2.62 0.67 0.31

— 219

— 1.67

—

07/11/2007 11:00 3.0 4.95 3.05 0.41 0.23

— 224

— 2.08

—

01/09/2008 10:50 0.1 30.8 2.87 1.50 0.22

— 246

— 2.02

—

04/16/2008 11:30 0.1 8.32 3.06 0.49 0.41

— 212

— 2.07

—

07/16/2008 11:10 0.1 2.86 3.33 0.70 0.41

— 225

— 2.41

—

01/14/2009 10:40 0.1 46.5 3.19 0.54 0.32

— 229

— 2.42 E1.13

07/08/2009 13:03 3.0 4.23 3.38 0.37 0.23

— 227

— 2.60

—
48 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Aluminum (01106) Antimony (01095) Arsenic (01000) Barium (01005) Beryllium (01010) Boron (01020) Cadmium (01025) Chromium (01030) Cobalt (01035) Copper (01040) Lead (01049) [LRL] [1.6] [0.2] [0.12] [0.2] [0.06] [8] [0.04] [0.04] [0.04] [0.4] [0.08] Sweetwater Reservoir near pump tower (SWR01) 10/14/2003 13:30 4.0

— 0.20 3.0 65

— 210

—

— 0.231 1.1

—

12/16/2003 12:00 4.0

— 0.23 2.2 69

— 194

—

— 0.251 1.4

—

02/17/2004 15:40 5.0 2.4 0.21 4.0 66

— 319

—

— 0.345 2.3

—

04/13/2004 11:20 2.0

— E0.17 1.5 70

— 144

—

— 0.264 2.4

—

07/13/2004 13:30 2.0 E0.8 E0.17 1.2 61

— 143 E0.02

— 0.238 2.0

—

10/12/2004 13:00 3.0 9.5 0.23 1.9 65

— 155 E0.03

— 0.233 1.8

—

01/12/2005 11:30 6.0 16.8 E0.19 1.1 65

— 143

—

— 0.240 2.3 E0.07

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

12/16/2003 13:30 0.5 E0.9 0.21 1.7 66

— 203

—

— 0.224 1.5

—

Perdue Treatment Plant

—finished water (SWR08)

10/15/2003 12:40 na

— 0.22 1.4 91

— 344

—

— 0.141 1.4

—

12/17/2003 13:50 na

— 0.22 E0.5 67

— 161

—

— 0.204 1.7

—

02/18/2004 11:40 na

— E0.18 E0.5 73

— 156 1.6

— 0.189 2.5

—

04/14/2004 09:30 na 3.6 E0.17 E0.8 65

— 158

—

— 0.227 2.5

—

07/13/2004 15:10 na

— E0.18 E0.6 61

— 150

—

— 0.249 2.2

—

10/12/2004 15:00 na E1.3 E0.17 E0.5 82

— 123

—

— 0.146 2.5

—

01/12/2005 15:00 na 4.1 0.23 E0.4 110

— 135

—

— 0.167 5.0

—

Perdue Treatment Plant

—imported raw water (SWR09)

10/12/2004 16:30 na 1.8 1.95 5.8 83

— 137 0.07

— 0.200 16 22

Sweetwater River at low-flow diversion upstream from Sweetwater Reservoir (LFDD)

12/17/2003 13:00 0.1

—

— 1.1 95

— 272 0.05

— 0.660 2.0 E0.08

01/13/2005 14:00 0.1 410 E0.19 1.1 84

— 135 E0.04

— 0.666 3.5 0.75

Table 9B. Analytical results for metals in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2710, from Sweetwater Reservoir watershed, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)]
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 49

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Lithium 

(01130)

Manganese 

(01056)

Molybdenum 

(01060)

Nickel 

(01065)

Selenium 

(01145)

Silver 

(01075)

Strontium 

(01080)

Thallium 

(01057)

Vanadium 

(01085)

Uranium 

(22703)

Zinc 

(01090)

[LRL] [0.6] [0.2] [0.4] [0.06] [0.08] [0.2] [0.4] [0.04] [0.10] [0.04] [0.6]

Sweetwater Reservoir near pump tower (SWR01)

10/14/2003 13:30 4.0 15.7 255 4.4 2.09 1.3

— 771

— 15.0 3.96 E0.5

12/16/2003 12:00 4.0 23.6 40.5 4.5 1.44 1.4

— 762

— 10.3 4.58 0.8

02/17/2004 15:40 5.0 24.3 15.6 5.0 4.47 2.6

— 762

— 166 4.05 1.9

04/13/2004 11:20 2.0 21.1 1.0 4.5 1.78 1.1

— 777

— 5.4 4.18 0.6

07/13/2004 13:30 2.0 19.0 0.7 4.4 2.00 E0.8

— 732

— 4.4 3.99 1.3

10/12/2004 13:00 3.0 20.2 14.7 4.7 2.31 1.1

— 776

— 6.4 4.21 1.2

01/12/2005 11:30 6.0 14.3 1.6 4.1 1.44 E0.6

— 604

— 4.2 4.03 10.4

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

12/16/2003 13:30 0.5 23.5 3.3 4.5 1.19 1.0

— 770

— 8.0 4.58 0.7

Perdue Treatment Plant

—finished water (SWR08)

10/15/2003 12:40 na 18.4 0.4 3.7 2.71 3.1

— 773

— 34.3 3.07 E0.5

12/17/2003 13:50 na 25.1 1.7 4.6 1.35 E0.6

— 781

— 0.90 4.53 0.7

02/18/2004 11:40 na 23.1 0.5 4.8 1.77 E0.6 0.5 797

— 0.80 3.98 0.7

04/14/2004 09:30 na 21.9 0.7 4.5 2.37 1.1

— 756

— 2.6 3.96 17.6

07/13/2004 15:10 na 19.7 1.4 4.5 2.49 E0.7

— 770

— 0.20 3.75 2.3

10/12/2004 15:00 na 24.9 1.5 4.1 3.20 1.3

— 657

— 0.60 3.16 E0.5

01/12/2005 15:00 na 29.5 0.5 4.7 1.79 1.3

— 776

— 0.90 3.92 9.6

Perdue Treatment Plant

—imported raw water (SWR09)

10/12/2004 16:30 na 21.0 1.2 3.9 4.27 3.1

— 629

— 63.1 3.38 6.0

Sweetwater River at low-flow diversion upstream from Sweetwater Reservoir (LFDD)

12/17/2003 13:00 0.1 6.7 173 7.9 2.00 E0.7

— 814

— 24.6 14.1 2.9

01/13/2005 14:00 0.1 3.8 56 3.8 1.69 0.8

— 271

— 8.3 5.32 27.1

Table 9B. Analytical results for metals in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2710, from Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per liter (μg/L). Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; —, compound was not detected at a concentration above the laboratory reporting level (LRL)]
50 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Air Sampling Strategy

The following section presents the sampling strategy used 

for the collection of air samples. Air samples were collected 

for the analysis of VOCs, SOCs, and metals. SOC analysis 

consisted of PAHs and pesticides (pesticides were sampled 

through August 2004). Beginning in November 2003, air 

samples also were collected for analysis of metals. All the 

air sampling methods are documented in this or the previous 

SWR project reports or in other publications as noted below. 

Most air data have not been entered into the USGS NWIS 

database, except for data from a limited number of samples for 

the AirPAH method described below. 

Air data collected at the SWR atmospheric sampling site 

may be used to determine the occurrence, temporal patterns, 

and ambient concentration levels of selected airborne organic 

compounds (VOCs, PAHs, and pesticides) and metals. Site 

AIR01 was installed downwind of the SR 125 alignment and 

upwind of SWR (fig. 2) along the predominant wind direction. 

The South Coast Air Pollution Control Board (William 

Brick, oral commun., 1999) helped with the siting and 

establishment of this atmospheric-sampling station following 

guidelines outlined by the National Atmospheric Deposition 

Program (Bigelow, 1984). Air samples were not collected at 

LLR because its foothill location (30 km east of SWR) was 

considered sufficiently downwind of SR 125 such that water 

quality at LLR would be expected to be minimally affected by 

any airborne contaminants originating from SR 125. 

SOC air samples were collected by using a sampler 

referred to as the SOC air sampler. Collection times for the 

SOC air samples were modified several times during this 

reporting period; the goal was to match the collection periods 

used for the air samples for VOCs, as well as those used by 

the California Air Resources Board Air Toxics Program at 

their sampling station in Chula Vista, Calif. Initially for this 

reporting period, the SOC air sample was a 24-hour, 7-day 

weekly composite collected every fourth week, with a 3-week 

time span between sample collection periods. Beginning 

November 17, 2003, the collection time was changed to a 

24-hour composite collected every 12th day to coincide with 

the air sample collection period for VOCs. The 24-hour period 

of active air flow collection was from midnight to midnight; 

the air sampler was deployed at the sampling site typically 

between 10 a.m. and 2 p.m. the day before sample collection 

and was retrieved from the site between 10 a.m. and 2 p.m. 

the day sample collection ended. Although the air-flow rate 

was increased to compensate for the change from a weekly to 

a 24-hour period, air volumes for the SOC air samples were 

lower (mean volume of 125 m3; range 112–150 m3) than 

for previous sample dates (mean volume of 330 m3; range 

220–584 m3) and lower than desired. Therefore, beginning 

March 28, 2004, the collection time was increased to a 

48-hour composite ( midnight to midnight), with initiation 

of sample collection matching the dates of VOC sample 

collection (mean volume of 382 m3; range 253–412 m3). 

The SOC collection period returned to a 24-hour composite 

beginning October 5, 2004, but with a slightly increased air 

flow that provided a mean volume of 185 m3 (range 159–209 

m3), and remained at this frequency for the duration of the 

reporting period. Beginning with the September 2, 2006, SOC 

sample, wider outlet tubing was installed on the sampler to 

provide greater sample volumes (mean volume of 437 m3; 

range 237–522 m3) for the 24-hour period. The increased 

sample volume was desired to help lower method detection 

levels for the PAHs.

Air Methods

Volatile Organic Compounds

The air sampling and analytical methods for VOCs were 

developed by, and all samples were analyzed by, the research 

group of Dr. James Pankow at the Oregon Graduate Institute 

of Oregon Health and Science University. The VOC air 

sampling and analytical methods are detailed in Pankow and 

others (1998, 2003). All VOC air samples were analyzed by 

using adsorption/thermal desorption GC/MS. Concentrations 

of VOCs in air are reported in parts per billion by volume 

(ppbv). These air methods were also used in several other 

USGS studies that investigated the occurrence and distribution 

of VOCs in air (Baehr and others, 1999a, 1999b; Bender and 

others, 2000). Ambient gas-phase atmospheric concentrations 

of VOCs were collected by using two programmable lowvolume air sampling pumps (224-PCXR8, SKC® Inc., Eighty 

Four, Pa.), each attached to a cartridge containing different 

sorbent materials. One pump pulled approximately 1.5 L of 

air through a glass cartridge containing 50 mg of Carbotrap B 

in series with 280 mg of Carboxen 1000 (Supelco, Bellefonte, 

Pa.). These samples were analyzed for compounds with the 

highest volatilities (high-volatility VOCs). The second pump 

pulled approximately 5 L of air through a glass cartridge 

containing 180 mg of Carbotrap B in series with 70 mg of 

Carboxen 1000 (Supelco, Bellefonte, Pa.). These samples 

were analyzed for VOCs with lower volatilities (medium/lowvolatility VOCs). Air samples were analyzed for 85 VOCs, 

which range in volatility from that of chloromethane 

(vapor pressure of 506 Kilopascal [kPa] at 20 °C) to 

1,2,3-trichlorobenzene (subcooled liquid-phase vapor pressure 

of 58.2 kPa at 25 °C) (Mackay and others, 1993).

Semivolatile Organic Compounds

The air sampling and analytical methods for SOCs were 

comparable to those described in Foreman and others (2000) 

for pesticides and to the EPA methods TO-4A for pesticides 

(U.S. Environmental Protection Agency, 1999a) and TO-13A 

for PAHs (Foreman and others, 1995; U.S. Environmental 

Protection Agency, 1999b). The air methods were developed 
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 51

to complement those methods for pesticides in water (Zaugg 

and others, 1995; Sandstrom and others, 2001) and for PAHs/

alkyl PAHs in sediment (Olson and others, 2004) that were 

used in the SWR monitoring program. The sampling and 

analytical methods used for the air samples for SOCs have 

been used in several other specialized studies undertaken by 

the USGS (Foreman and others, 1997, 2000; Majewski and 

others, 1998; Mendez and others, 2007). SOC concentrations 

are reported in nanograms per cubic meter of air and can be 

converted to parts per billion by volume. 

The high-volume air samples for SOCs were collected 

by drawing air through a 90-mm diameter GFF (type 

A/E, Pall Corp, East Hills, NewYork) and then through a 

cartridge containing two polyurethane foam (PUF) plugs. 

The GFF, containing collected atmospheric particles, was 

analyzed to provide the operationally defined particulatephase concentration of an SOC. The PUF plugs collected the 

operationally defined gas-phase concentration of an SOC. 

Before being used, the GFFs were cleaned by baking them at 

450 °C and allowing them to cool in a desiccator for at least 

2 hours. The GFFs were then weighed to the nearest 0.2 mg, 

wrapped in baked aluminum foil, and stored in resealable 

polyethylene bags. At SWR, a GFF was removed from the foil 

with clean (methanol-rinsed) stainless-steel forceps and placed 

in a perfluoralkoxy fluoropolymer (Teflon-PFA) filter holder 

(series 90, Savillex Corp., Minnetonka, Minnesota) that was 

modified in the following two ways: (1) the outer closure piece 

of the filter holder was removed to provide an 80-mm diameter 

opening that would improve air flow and expose most of 

the GFF surface, enabling it to better collect atmospheric 

particles; and (2) the inner closure piece of the filter holder 

was machined to include a 3.8-cm female National Pipe 

Thread to allow a direct connection to the 3.8-cm male 

National PipeThread on the inlet of the PUF cartridge. 

PUF plugs were 5 cm in diameter by 7.6 cm long 

and were prepared from open-cell foam that contained no 

polybrominated diphenyl ether flame retardants. For samples 

collected through June 15, 2005, the average PUF density 

was 0.043 g/cm3 (Netherland Rubber Company, Cincinnati, 

Ohio). However, the manufacture of this PUF material was 

discontinued. Beginning with the July 21, 2005, sample, 

PUF plugs had an average density of 0.022 g/cm3 (Tisch 

Environmental, Village of Cleves, Ohio), corresponding 

to the density prescribed by EPA Method TO-4A. PUF 

plugs were cleaned by first being rinsed with tap water 

and then sequentially extracted for at least 12 hours in a 

“Soxhlet” extractor apparatus with each of the following 

solvents: acetone, 30-percent ethyl acetate in hexane, and 

dichloromethane. Beginning July 26, 2004, only acetone 

was used as the final extraction solvent to clean PUF plugs 

because it provides a cleaner PUF plug based on the results 

from a related atmospheric contaminants study (Garrison and 

others, 2006). Residual solvent was squeezed from the PUF 

plugs using an acetone-rinsed stainless-steel potato masher, 

and the plugs were dried in a vacuum oven at 40 °C for at least 

48 hours before being stored in sealed 500-mL wide-mouth 

jars with Teflon-lined lids. 

At the SWR laboratory, primary (top) and secondary 

(bottom) PUF plugs were positioned in series inside a 24.2-cm 

long by 3.5-cm internal diameter Teflon-PFA cartridge 

(Savillex Corporation); the bottom PUF was held in place 

against a Teflon-PFA screen. The PUF plugs were carefully 

inserted into the PUF cartridge using methanol-rinsed 

stainless-steel forceps to ensure that the PUF plugs were wellfitted to the cartridge wall without creases that would allow 

air to migrate around the plug instead of passing through the 

foam. At the atmospheric sampling site, the PUF cartridge 

was connected to the GFF holder, and the GFF-PUF sampling 

train was positioned inside a high-volume sampler enclosure 

(Graesby-GMW, Village of Cleves, Ohio) comparable to 

that described in EPA method TO-4A (U.S. Environmental 

Protection Agency, 1999a). The outlet of the PUF cartridge 

was connected by 0.95-cm outer diameter Teflon tubing to a 

blower motor. Beginning in September 2006, wider (3.9-cm 

internal diameter) outlet tubing was installed that nearly 

doubled the flow rate. Air samples were collected at the 

sampling sites by pulling ambient air through the GFF-PUF 

sampling train. Sampling periods were controlled by a timer, 

and sample volume was calculated by multiplying the sample 

collection time by the air-flow rate measured at the beginning 

and at the end of the sampling period using a calibrated flow 

meter. After the samples were collected and returned to the 

SWR laboratory, the GFF was removed from the holder 

using clean forceps, returned to the aluminum foil, folded 

in half (particle-laden side inward), and sealed in the foil 

and bag. PUF plugs were returned to the jars using forceps; 

the jars were labeled to identify the top or bottom PUF plug 

along with other relevant information and were tightly sealed 

with the lids. The GFF and PUF plugs were stored at –5 °C 

(maximum), if necessary, before being shipped overnight on 

ice packs to the USGS NWQL.

At the NWQL, the air-sample components were stored at 

–5 °C (maximum) until analyzed. The GFFs were warmed to 

room temperature then desiccated for 24 hours and weighed 

to the nearest 0.2 mg to determine particle weight based with 

comparison with the GFF weight before sample collection. 

This particle weight was divided by the air volume of the 

sample to determine the total suspended particle (TSP) 

concentration in micrograms of particles per cubic meter of 

air.

Air-sample components were extracted using one of 

two procedures during this reporting period. Top and bottom 

PUF plugs were extracted together for all samples from this 

reporting period except the November 17, 2003, sample, 

which also is shown as a combined top and bottom PUF 

result in the data table. The combined PUF extraction was 

done, in part, to reduce analytical costs, and because results 

from the separate analysis of PUF plugs from prior samples 
52 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

provided sufficient characterization of collection efficiency 

for the SOCs for the air volumes collected in this study. The 

GFF and PUF plugs for samples collected from November 

2003 through August 19, 2004, were extracted by using 

pressurized-solvent extraction (PSE) described previously 

(Mendez and others, 2008). PSE relies primarily on the 

elevated temperature of a pressurized solvent to achieve 

rapid extraction (U.S. Environmental Protection Agency, 

1999a; Alexandrou and others, 2001). Each GFF was placed 

into an 11 mL stainless-steel cell, and top and bottom PUF 

plugs for a sample were placed into a 100 mL cell before 

the compounds were extracted. Surrogate compounds added 

to the environmental samples were extracted by use of an 

accelerated solvent extractor 200 or 300 (Dionex Corporation, 

Salt Lake City, Utah), using two 15-minute static cycles 

at 100–120 °C (GFF) or 100 °C (PUF) under pressurized 

conditions (10,342 kPa). Although PSE provides excellent 

extraction efficiency for SOCs, the heated PSE produced 

greater amounts of coextracted interfering compounds from 

the PUF plugs compared to traditional solvent extraction 

procedures previously used in this study (Mendez and others, 

2007, 2008). Therefore, PUF plugs for all samples collected 

after August 19, 2004, as well as many, but not all GFFs, were 

extracted by traditional solvent extraction. For this approach, 

top and bottom PUF plugs for a sample were placed in a 

Soxhlet apparatus. The GFF was placed in a separate 500-mL, 

flat-bottom flask. The GFFs or PUF plugs were fortified with 

the surrogate compounds (see the QA section) and extracted 

with 100mL (GFF) or 300mL (PUF) of 30-percent ethyl 

acetate in hexane for at least 12 hours. All extracts were dried 

with sodium sulfate and reduced in volume using KudernaDanish distillation to about 4–6 mL. 

For samples collected through August 19, 2004, the 

extract from each sample was reduced by nitrogen gas 

evaporation to about 2 mL and quantitatively (by weight) split 

in half before column cleanup. One portion (PAH fraction) 

was introduced to a 0.5-g C-18 SPE column positioned above 

a 1-g florisil SPE column (Biotage, Charlottesville, Virginia; 

the columns were pre-rinsed with acetone, dichloromethane, 

and ethyl acetate). Analytes were eluted with 6 mL of ethyl 

acetate, which was then reduced to about 0.15 mL by nitrogen 

gas evaporation, and transferred with a 0.1-mL ethyl acetate 

rinse to a GC vial containing 500 ng of 1,4-dichlorobenzene 

and five perdeuterated PAHs (naphthalene-d8, 

acenaphthene-d10, phenanthrene-d10, chrysene-d12, and 

perylene-d12) in ethyl acetate as injection internal standards. 

Air extracts for PAHs and alkyl PAHs were analyzed by 

GC/MS in full-scan mode. Analysis of these compounds used 

instrumental procedures comparable to those described by 

Olson and others (2004). All samples except one collected 

after July 11, 2007, were analyzed in a combined SIM/Scan 

mode to lower analyte detection levels. The PAH analysis is 

referred to as the “AirPAH” method in this report. GFF and 

PUF sample components for samples collected on November 

17, 2003, and QC samples processes on November 19, 2003 

(sample preparation set 03.32308) were analyzed by GC/MS 

operated in the SIM mode as used for previously reported 

samples (Mendez and others, 2007, 2008). Concentrations 

for any detected alkyl PAH were estimated on the basis of the 

responses from the calibration curves for the corresponding 

parent PAHs because alkyl PAH standards were not available 

when calibration standards were prepared (Olson and others, 

2004). Numerical results for all these alkyl PAHs were 

reported as estimated (“E” code), meaning they have a higher 

degree of uncertainty. Dilution of some extracts from the PUF 

component was necessary to quantify the results for several 

PAHs that were greater than the highest calibration standard at 

typical final extract volumes.

The remaining extract portion (pesticide fraction) for 

each sample was added to a 0.5-g graphitized carbon SPE 

column (CarboPrep 90, Restek Corp; Bellefonte, Pa.; prerinsed with acetone, dichloromethane, and ethyl acetate), 

and the analytes were eluted with 13 mL of a 50-percent 

dichloromethane in ethyl acetate solution. The eluent was 

reduced using micro-Kuderna-Danish distillation to about 

1 mL. A procedural internal standard solution of three 

perdeuterated PAHs (acenaphthene-d10, phenanthrene-d10, 

and chrysene-d12) in toluene was added to the extract before 

final solvent reduction to about 0.15 mL using nitrogen gas 

evaporation. The extract was transferred to a GC vial with 

a toluene rinse for an approximate 0.25-mL final volume 

for analysis by GC/MS-SIM (comparable to analytical 

methodology on NWQL water schedule 2003) for the 

66 compounds that are a subset of the high- and moderateuse pesticides and degradates determined using water 

methods described by Zaugg and others (1995), Sandstrom 

and others (2001), and Madsen and others (2003). Analysis 

of pesticide and related degradate compounds is referred to 

as the “Airpest003” method in this report. Some analytes 

included in NWQL schedule 2003 were not amenable to the 

Airpest003 method because the compounds were inadequately 

collected by the PUF or recovered during the SPE cleanup 

step; therefore, these compounds were not reported for the air 

samples.

Starting with the air sample collected on August 31, 

2004, the samples were no longer analyzed for pesticides 

to reduce analytical costs; therefore, the entire samplecomponent extract was reduced to approximately 1 mL using 

nitrogen evaporation then cleaned up and analyzed using the 

AirPAH procedure as described previously. The final extract 

volumes ranged from 0.35–0.50 mL for GC/MS analysis. The 

SOC concentrations are reported in nanograms per cubic meter 

of air.

Metals

The Quartz Fiber Filters (QFF) were purchased and 

handled in the same manner as the GFFs except that nylon 

forceps were used to handle the filters instead of stainlesssteel forceps. The filters were baked at 400 °C and stored in 

a desiccant until cool, then individually weighed and placed 

in a plastic petri dish. QFFs were installed into the sampling 
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 53

cartridge in the same way as the GFFs. At the end of sampling, 

the QFFs were removed from the sampler, folded in half, and 

placed back into the petri dish. They did not need to be chilled, 

so they were stored in the shipping container (a Pelican 

case) at the SWR laboratory until about 15–20 samples were 

collected; samples were then shipped to the laboratory where 

they were reweighed and prepared for analysis. 

The environmental samples and blanks for metals in 

air were analyzed at the USGS Crustal Geophyscis and 

Geochemistry Science Center (Geologic Division Laboratory) 

in Denver, Colorado, using inductively coupled plasma massspectroscopy (ICP-MS; Briggs and Meier, 2002; Lamothe 

and others, 2002). The QFF samples were analyzed in batches 

consisting of about 15 samples, each including one laboratory 

blank QFF. The mean laboratory-blank result was subtracted 

from the result of each field sample to obtain the final mass 

of analyte per sample. These values were then divided by the 

total volume of air sampled to obtain the concentration in 

nanograms per cubic meter of air. The method detection limits 

(MDLs) were estimated as three times the standard deviation 

of determined concentrations in three replicate reagent blanks 

(not QFF blanks) that were prepared along with the QFF 

samples. Thus, the reported MDL value for each metal is 

defined here as the minimum concentration of that element 

that can be measured and reported with 95-percent confidence 

that the concentration is greater than zero.

Air-Quality Assurance

The QC air methods used were comparable to the water 

methods for assessing the analytical method efficiency. Groups 

of VOC or SOC air samples had one or more associated 

laboratory-prepared matrix or reagent spike and laboratory 

blank samples analyzed along with the environmental samples. 

Additionally, surrogate compounds were added to BNA 

and pesticide samples at the laboratory to monitor samplespecific performance of the analytical method. No surrogates 

were added to the VOC air samples. The GFF or PUFs 

were fortified with surrogate compounds nitrobenzene-d5, 

2-fluorobiphenyl, and terphenyl-d14 for the PAH analysis. 

For the pesticide analysis, surrogate compounds diazinon-d10 

and α-HCH-d6 were added. Additional information on air QA 

methods and QC results are presented in the appendix. 

Air VOC matrix spikes were prepared by fortifying 

the air sampling media (VOC cartridge) with a known 

concentration of selected analytes. Matrix spikes also can be 

used to test the effects of various sampled matrices on the 

recovery of specific compounds, including matrix interference 

or matrix-induced analyte degradation. Lot blanks are 

processed at the lab on a subset of the air VOC cartridges 

sent for environmental samples; these lot blanks are used to 

test the matrix that was used during the manufacture of the 

cartridges. Laboratory blanks are used to assess whether the 

sample processing steps in the laboratory have introduced 

contamination. A laboratory blank was processed with every 

environmental air sample.

Each VOC air sample collected had a travel blank, lot 

blank, and laboratory blank and about a quarter of the air 

samples collected had a travel matrix-spike associated with 

it as described in Pankow and others (1998). Travel matrixspike cartridges were fortified at the laboratory with a known 

concentration of the VOC analytes, sent to the field, and 

subsequently analyzed at the laboratory to assess recovery 

bias and reproducibility at the spike concentration. Travel 

(trip) blank-sample cartridges were shipped with the field 

sample cartridges, kept with the field sample cartridges, and 

shipped back to the laboratory but was not exposed to the air. 

Travel blanks were shipped with every VOC air sample and 

were used to identify contamination that may have occurred 

during sample transport, storage, and analysis rather than 

as a result of sample collection. Lot blanks consisted of a 

randomly selected cartridge from a group of simultaneously 

manufactured (conditioned) air VOC cartridges that were 

analyzed at the laboratory to test for contaminants derived 

from the cartridge sorbents or conditioning steps. Similarly, 

laboratory blanks were randomly selected from conditioned 

cartridge groups, fortified with the internal standards, and 

stored at the laboratory until analysis along with associated 

field samples; the laboratory blanks were used to assess 

contamination introduced at the laboratory. Blank sample data 

in this report are presented in concentration units comparable 

to field sample data by assuming sample volumes of 1.5 L 

(high-volatility VOCs) and 5 L (medium/low-volatility 

VOCs). Replicate VOC air samples were taken by attaching a 

Teflon “Y” connector to the pump intake hose, attaching two 

of the same type sampling cartridges to it, and adjusting the 

flow through each cartridge to either 1 or 5 Lpm depending 

on the type of cartridge. Fourteen replicate high-volatility 

and eleven replicate medium/low-volatility air samples were 

collected to assess sample reproducibility.

All VOC results for air samples have been 

blank-corrected at the laboratory before the data were 

released. Travel blanks (50–60) from previous and current sets 

of samples were averaged to obtain the mean blank level plus 

standard deviation. If the amount in a sample was less than 

the sum of the mean blank level and three times the standard 

deviation, the concentration was reported as not detected. If 

the amount in a sample was larger than the sum of the mean 

blank level and three times the standard deviation, the mean 

blank level was subtracted from the amount in the sample and 

the difference was the reported concentration.

Separate GFF and PUF laboratory blank and laboratory 

matrix-spike samples were analyzed for each set of prepared 

SOC environmental samples. They were prepared using one or 

more of the same lots of GFFs or PUF media used to collect 

the field samples. Storage conditions for these blank media 

were comparable to storage conditions at the Sweetwater 

laboratory. Reported concentrations of PAHs and pesticides in 

laboratory (and field) blanks were calculated assuming an air 

volume of 315 m3 to simplify comparison with field sample 

data. Field sample air data for PAHs and pesticides were not 

corrected for laboratory blank concentrations. Laboratory 
54 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

matrix-spike samples were prepared by fortifying the parent 

PAH and pesticide compounds (until pesticide analysis was 

discontinued) directly to the media just prior to extraction. 

Replicate air samples for PAHs and pesticides were not 

collected during this study. Each air-sample component (GFF 

and top and bottom PUF plugs) was fortified with surrogate 

compounds at the NWQL to monitor performance during 

sample preparation and analysis.

Two types of field blank samples were collected and 

analyzed for PAHs during this reporting period. One type, 

referred to as “Field blank,” was used to examine possible 

contamination resulting from field handling of the GFFPUF sampling components and from post-collection sample 

processing steps. This Field blank was obtained by loading one 

clean GFF and two clean PUF plugs into the sampling train 

at the field laboratory, taking the train out to the site to install 

and uninstall, returning the train to the field laboratory, and 

unloading the GFF and PUF plugs for storage and shipping 

in the same manner as the environmental samples. No air was 

drawn through the sampling train. This type of blank was 

collected in October 2004 and June 2009. The second type, 

referred to as “Exposed field blank,” was handled identically 

to the Field blank, except it also included a 24-hour exposure 

period when the train was positioned at the sampling site but 

no air was drawn through the train. The Exposed field blank 

simulates the approximately 24-hour period of time that the 

air sampling train was deployed in the field beyond the active 

air-flow collection period and was used to assess potential 

passive sampling of PAH by the sampler. An Exposed field 

blank was collected in January 2007 and June 2009. Ideally, 

additional field blanks should have been collected during 

this reporting period to assess SOC contamination potential 

relative to laboratory blank results. Field blank samples from 

this reporting period were collected after August 2004 and, 

thus, were not analyzed for pesticides.

Two types of soil standard reference material (SRM) were 

used as QC checks of the digestion process and instrument 

calibration for the analysis of metals in air samples—the 

National Institute of Standards and Technology (NIST) 2710 

(National Institute of Standards and Technology, 1991b) and 

the Canadian Certified Reference Materials Project (CCRMP) 

SO-2 and SO-4 standards (Potts and others, 1992). The NIST 

2710 material is a certified SRM. The CCRMP standards are 

not “certified” to the same extent as the NIST standards. They 

have, however, consensus values from results obtained by 

about 80 internationally recognized geochemical laboratories 

and are used in conjunction with the NIST standards to look 

for systematic biases in the data set. The soil SRM was a 

solid-phase material that could be processed in the same 

manner as the QFF substrate used to collect the air samples. 

If all three percent recovery values of the SRM for a given 

element were biased by more than 10 percent in the same 

direction, the data were reviewed and reanalyzed. If the SRM 

analytical results were less than 10 times the MDL, any lack 

of agreement was considered statistically insignificant and was 

ignored. The Potts standards were used in conjunction with the 

NIST standards because even though some of the SO-2 and 

SO-4 results can be more variable than the NIST standards, in 

some cases no NIST values are available. Including the SO-2 

and SO-4 results gives a better indication of the maximum bias 

that may exist in the data set. Not every major and trace metal 

in every SRM has values in the certificate of analysis provided 

by the original suppliers. Therefore, if neither the original 

supplier of the SRM or the data compilations, such as by Potts 

and others (1992), provide values for an element, that element 

is listed as not analyzed.

The percent recovery for metals in the QC samples 

is the ratio of the analyzed concentration to the expected 

concentration times 100. The laboratory reports the total mass 

of each element measured on the QFF. This enables the easy 

calculation of airborne concentrations for each element in 

units of nanograms per cubic meter of air. The QC calculations 

were performed similarly by calculating a recovery of the total 

mass of a given element from a QC sample. The laboratory 

also chose a QC sample weight of 0.1 g. For each element 

reported in the QC sample, the expected mass recovered after 

the digestion procedure was 0.1 times the known concentration 

of that element in the QC sample. Therefore, values from 

this study have to be multiplied by 10 to be comparable to 

literature values.

Air Results

The VOC air method was used to analyze 85 compounds, 

and the results are presented in tables 10A and 10B. 

Chloroethane was the only high-volatility volatile organic 

compound detected in air samples. Twenty-eight medium/lowvolatility volatile organic compounds had no detections in air 

samples. Acetone, benzene, ethenylbenzene, and naphthalene 

had blank detections greater than 30 percent of the adjusted 

environmental sample concentrations and were flagged as 

suspect. Because VOC results for air samples were blank 

corrected (adjusted environmental sample) at the laboratory 

before the data were released, the true blank value is unknown. 

The concentration in the current blank associated with each 

sample was added to the environmental sample, and if the 

blank was larger than 30 percent of the adjusted environmental 

sample plus the blank, the compound was considered to 

be biased high (table 10B). Benzene was detected in the 

laboratory blank above the acceptable criteria (30 percent of 

the adjusted environmental sample) in about 30 percent of the 

environmental samples. Detections of MTBE, benzene, and 

toluene in air samples at the atmospheric sampling site (fig. 2) 

during the entire study period are shown in figure 4A for 

comparison to these compounds in water. These data show a 

strong correlation between concentrations of these compounds 

in air throughout the study until MTBE was phased out 

in January 2004. Concentrations of benzene and toluene 

continued to have a strong correlation to each other, although 

toluene was detected at a higher concentration. A detailed 

analysis of VOCs in air and water is beyond the scope of this 

report. 
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 55

Table 10A. Analytical results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air 

samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (pbbv). Abbreviations: LRL, laboratory reporting 

level; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; °C, degree Celsius; —, compound was not detected at a concentration above the laboratory reporting level]

Date

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

10/12/2003 759.7 20.7 — — — — —

10/24/2003 759.0 18.2 — — — — —

11/05/2003 761.7 12.7 — — — — —

11/17/2003 763.0 13.3 — — — — —

11/29/2003 761.9 15.0 — — — — —

12/11/2003 761.6 12.0 — — — — —

12/23/2003 760.7 15.4 — — — — —

01/04/2004 764.9 9.5 — — — — —

01/14/2004 758.0 12.9 — — — — —

01/28/2004 763.5 12.3 — — — — —

02/09/2004 762.5 12.4 — — — — —

02/21/2004 757.9 11.7 — — — — —

03/04/2004 758.8 13.8 — — — — —

03/16/2004 760.6 15.0 — — — — —

03/28/2004 760.2 20.8 — — — — —

04/09/2004 760.3 16.6 — — — — —

04/21/2004 760.8 16.0 — — — — —

05/03/2004 758.1 18.2 — — — — —

05/15/2004 757.5 18.2 — — — 1.25 —

05/27/2004 761.2 17.5 — — — — —

06/08/2004 757.3 17.1 — — — — —

06/20/2004 760.7 19.2 — — — — —

07/02/2004 761.7 18.9 — — — — —

07/14/2004 759.7 22.9 — — — — —

07/26/2004 758.9 21.2 — — — — —

08/19/2004 759.9 20.7 — — — — —

08/31/2004 759.1 22.2 — — — — —

09/12/2004 757.7 22.5 — — — — —

09/23/2004 759.2 22.1 — — — — —

10/06/2004 759.0 17.9 — — — — —

10/18/2004 758.9 18.7 — — — — —

10/30/2004 761.7 15.0 — — — — —

11/23/2004 763.3 11.2 — — — — —

12/05/2004 754.7 10.5 — — — — —

12/28/2004 758.4 13.4 — — — — —

01/10/2005 762.2 15.3 — — — — —

01/22/2005 762.3 13.6 — — — — —

02/03/2005 762.4 15.7 — — — — —

02/15/2005 762.4 12.8 — — — — —

02/27/2005 764.0 14.0 — — — — —

03/11/2005 760.6 15.0 — — — — —

03/23/2005 760.0 13.5 — — — — —

04/04/2005 762.7 14.0 — — — — —

04/16/2005 759.3 16.0 — — — — —

04/28/2005 762.0 15.1 — — — — —

05/10/2005 759.9 16.0 — — — — —

06/03/2005 756.7 18.2 — — — — —

06/15/2005 758.1 17.8 — — — — —

Table 10A. Analytical results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air 

samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
56 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 10A. Analytical results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air 

samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (pbbv). Abbreviations: LRL, laboratory reporting 

level; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; °C, degree Celsius; —, compound was not detected at a concentration above the laboratory reporting level]

Date

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

07/09/2005 759.2 18.7 — — — — —

07/25/2005 757.0 25.4 — — — — —

08/02/2005 758.9 20.6 — — — — —

08/14/2005 757.9 19.4 — — — — —

08/26/2005 759.2 25.9 — — — — —

09/07/2005 758.9 20.3 — — — — —

09/19/2005 760.1 19.2 — — — — —

10/01/2005 756.7 20.5 — — — — —

10/13/2005 759.5 20.3 — — — — —

10/25/2005 763.4 16.4 — — — — —

11/06/2005 759.0 15.0 — — — — —

11/18/2005 762.4 20.2 — — — — —

12/12/2005 762.7 12.3 — — — — —

12/24/2005 762.8 13.3 — — — — —

01/06/2006 765.0 18.1 — — — — —

01/17/2006 768.0 11.8 — — — — —

01/29/2006 765.2 11.5 — — — — —

02/10/2006 764.0 12.9 — — — — —

02/22/2006 763.3 11.2 — — — — —

03/05/2006 764.7 13.2 — — — — —

03/30/2006 761.8 13.4 — — — — —

04/11/2006 760.8 15.6 — — — — —

04/23/2006 762.2 13.4 — — — — —

05/05/2006 761.1 15.7 — — — — —

06/10/2006 757.5 17.8 — — — — —

06/22/2006 760.2 19.7 — — — — —

07/04/2006 760.7 21.9 NA NA NA NA NA

07/28/2006 759.6 25.1 — — — — —

08/09/2006 758.4 23.8 — — — — —

08/21/2006 758.5 21.7 — — — — —

09/02/2006 755.5 23.2 — — — — —

09/14/2006 756.1 18.8 — — — — —

09/26/2006 761.0 19.3 — — — — —

10/08/2006 759.4 16.5 — — — — —

10/20/2006 756.8 19.4 — — — — —

11/01/2006 761.6 16.5 — — — — —

11/13/2006 715.9 16.9 — — — — —

11/25/2006 706.9 14.5 — — — — —

12/07/2006 762.7 15.7 — — — — —

12/31/2006 765.7 10.1 — — — — —

01/12/2007 760.5 9.4 — — — — —

01/24/2007 764.2 13.4 — — — — —

02/05/2007 763.2 17.3 — — — — —

02/17/2007 761.7 19.1 — — — — —

03/01/2007 763.3 9.9 — — — — —

03/13/2007 761.4 16.2 — — — — —

03/25/2007 763.0 15.5 — — — — —

04/06/2007 758.9 14.9 — — — — —

04/18/2007 761.6 14.1 — — — — —
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 57

Table 10A. Analytical results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air 

samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (pbbv). Abbreviations: LRL, laboratory reporting 

level; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; °C, degree Celsius; —, compound was not detected at a concentration above the laboratory reporting level]

Date

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

04/30/2007 759.8 16.6 — — — — —

05/12/2007 761.1 15.5 — — — — —

05/24/2007 759.0 17.3 — — — — —

06/05/2007 759.0 16.4 — — — — —

06/17/2007 758.2 18.0 — — — — —

06/29/2007 758.9 19.8 — — — — —

07/11/2007 745.0 20.8 NA NA NA NA NA

07/23/2007 758.3 20.9 — — — — —

08/04/2007 701.1 20.7 — — — — —

08/16/2007 699.5 22.9 — — — — —

08/28/2007 756.0 24.6 — — — — —

09/09/2007 758.7 20.6 — — — — —

09/21/2007 757.6 17.4 — — — — —

10/03/2007 758.3 20.7 — — — — —

10/15/2007 758.0 17.1 — — — — —

10/27/2007 762.5 20.3 — — — — —

11/08/2007 761.9 15.2 — — — — —

11/20/2007 759.9 13.2 — — — — —

12/02/2007 769.0 11.3 — — — — —

12/14/2007 765.5 10.2 — — — — —

12/26/2007 762.4 9.7 — — — — —

01/07/2008 NA NA NA NA NA NA NA

01/19/2008 707.0 10.7 — — — — —

01/31/2008 766.8 10.9 — — — — —

02/12/2008 710.6 16.0 — — — — —

02/24/2008 716.2 12.2 — — — — —

03/07/2008 706.1 15.9 — — — — —

03/19/2008 763.9 12.8 — — — — —

03/31/2008 763.3 12.3 — — — — —

04/12/2008 708.7 22.8 — — — — —

04/24/2008 705.5 15.2 — — — — —

05/06/2008 704.8 13.8 — — — — —

05/18/2008 699.5 24.1 — — — — —

05/30/2008 703.2 17.2 — — — — —

06/11/2008 701.3 17.1 — — — — —

06/23/2008 700.3 21.8 — — — — —

07/05/2008 702.1 20.8 — — — — —

07/17/2008 704.2 20.7 — — — — —

07/29/2008 705.3 21.4 — — — — —

08/10/2008 704.8 22.4 — — — — —

08/22/2008 703.9 20.7 — — — — —

09/03/2008 702.3 23.1 — — — — —

09/15/2008 709.2 21.9 — — — — —

09/27/2008 719.1 20.9 — — — — —

10/09/2008 704.0 18.7 — — — — —

10/21/2008 761.5 16.6 — — — — —

11/02/2008 763.3 17.5 — — — — —

11/14/2008 760.0 21.3 — — — — —

11/26/2008 758.5 16.2 — — — — —

12/08/2008 765.3 13.3 — — — — —

12/20/2008 766.1 9.2 — — — — —
58 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 10A. Analytical results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air 

samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (pbbv). Abbreviations: LRL, laboratory reporting 

level; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; °C, degree Celsius; —, compound was not detected at a concentration above the laboratory reporting level]

Date

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

01/01/2009 762.0 11.4 — — — — —

01/13/2009 765.3 17.8 — — — — —

01/25/2009 762.8 11.6 — — — — —

02/06/2009 761.0 13.2 — — — — —

02/18/2009 766.3 11.0 — — — — —

03/02/2009 763.0 18.3 — — — — —

03/14/2009 759.5 12.9 — — — — —

03/26/2009 759.0 12.7 — — — — —

04/07/2009 762.5 13.7 — — — — —

04/19/2009 760.5 25.2 — — — — —

05/01/2009 761.8 16.9 — — — — —

05/13/2009 758.3 16.6 — — — — —

05/25/2009 759.7 16.0 — — — — —

06/06/2009 760.5 17.1 — — — — —

06/18/2009 756.7 17.9 — — — — —

06/30/2009 757.3 20.8 — — — — —

07/12/2009 760.2 24.8 — — — — —

07/24/2009 759.0 16.7 — — — — —

Individual PAH compounds and alkylated PAH homologs 

determined by the AirPAH method, along with estimated 

reporting levels, are given in table 11A. Concentrations of 

PAH and alkyl PAH detected in air samples are given in 

table 11B, of which, nineteen compounds were detected. 

Typically, the PUFs had better recoveries than the GFFs, and 

most blank detections were an order of magnitude lower than 

the LRL. 

Pesticide and related degradate compounds analyzed in 

air samples by the Airpest003 method are given in table 12A, 

and concentrations for the 10 pesticides detected in air 

samples are given in table 12B. About 10 percent of spike 

recoveries for Airpest003 were below the acceptable criteria; 

carbaryl, fenamiphos, phorate, and terbofos had one spike 

with no recovery. The low spike recoveries may indicate the 

compound was under-detected and may be reported at lower 

concentrations than actually occurred.

Concentrations for 32 metals analyzed in air samples 

are presented in table 13, along with determined TSP 

concentrations for these samples. Niobium and thallium 

were the least frequently detected metals in air samples. Ten 

samples were not collected during this time frame because of 

mechanical problems or torn filters. Most laboratory-blank 

metal samples had detections above their LRLs, but the 

detections vary. Detections near the LRL for these compounds 

may be caused by the sampling or processing steps.

Surficial Bed-Sediment Sampling Strategy

Surficial bed-sediment samples were collected for 

PAHs and metals at the three water sampling sites in SWR 

(sites SWR01, SWR03, and SWR06), at site LFDD, and at 

both LLR water sampling sites (sites LLR01 and LLR02) in 

October 2004 (figs. 2 and 3). Surficial bed-sediment samples 

were analyzed for PAHs, OC pesticides, and metals at the 

five water sampling sites in the SWR (sites SWR01, SWR02, 

SWR03, SWR04, and SWR06), at site LFDD, and at both 

LLR water sampling sites (sites LLR01 and LLR02) in August 

2009 (figs. 2 and 3). All surficial bed sediment data have been 

entered into the USGS NWIS database, except for metals. 

Sediment samples for metals also were collected near the 

atmospheric sampling site (AIR01) in October 2004 (fig. 2).

Table 10B. Analytical results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute 

for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

(Table 10B is provided separately as a Microsoft Excel® worksheet.)
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 59

Table 11A. Polycyclic aromatic hydrocarbons (PAHs) and alkylated-PAH compounds analyzed in air samples, processed at the 

U.S. Geological Survey National Water Quality Laboratory, from the Sweetwater Reservoir atmospheric site, San Diego County, 

California.

[The site-identification number is 324141117001601. The parameter code is used in the U.S. Geological Survey computerized data system (National Water 

Information System) to uniquely identify a specific constituent or property. Estimated reporting level: for split extract analyzed in full scan mode assuming 

315 cubic meters average air volume. Calculated sum of the concentration determined in glass-fiber filter sample component plus the concentration in the combined top and bottom polyurethane foam plug sample components. Estimated analyte reporting levels were 0.05 nanograms per cubic meter (ng/m3 ) for GFF and 

0.1 ng/m3 for polyurethane foam plug sample components that were analyzed by combined selected ion monitoring and full scan (SIM/Scan) mass spectrometry. 

Alkylated PAH homolog concentrations are estimated.]

Compound

Parameter code for the 

analysis of the 

glass-fiber filter sample 

component only

Parameter code for 

the analysis of both top 

and bottom polyurethane 

foam plug sample 

components

Parameter code 

for calculated 

sum of all sample 

components

Estimated 

reporting 

level 

(ng/m3)

Anthracene 65308 65470 64231 0.5

Benzo[a] anthracene 65309 65471 64237 0.5

Benzo[a] pyrene 65310 65472 64238 0.5

Benzo[b] fluoranthene 65311 65473 64239 0.5

Benzo[e] pyrene 65312 65474 64240 0.5

Benzo[ghi] perylene 65313 65475 64241 0.5

Benzo[k] fluoranthene 65314 65476 64242 0.5

Chrysene 65315 65477 64285 0.5

Coronene 65316 65478 64290 0.5

4H-Cyclopenta[def]phenanthrene 65304 65466 64218 0.5

Dibenzo[a,h] anthracene 65317 65479 64302 0.5

Fluoranthene 65318 65480 64335 0.5

Indeno[1,2,3-cd] pyrene 65319 65481 64343 0.5

2-Methylanthracene 65303 65465 64206 0.5

1-Methylphenanthrene 65298 65460 64193 0.5

1-Methylpyrene 65299 65461 64194 0.5

Perylene 65321 65483 64421 0.5

Phenanthrene 65322 65484 64422 0.5

Pyrene 65323 65485 64437 0.5

Alkylated polycyclic aromatic hydrocarbons homologs

C1-178 Isomers, methylated phenanthrenes/anthracenes 65325 65487 64253 0.5

C1-202 Isomers, methylated fluoranthenes/pyrenes 65326 65488 64254 0.5

C1-228 Isomers, methylated benzo[a]anthracenes/chrysenes 65327 65489 64255 0.5

C1-252 Isomers, methylated benzopyrenes/perylenes 65328 65490 64256 0.5

C2-178 Isomers, alkylated phenanthrenes/anthracenes 65330 65492 64258 0.5

C2-202 Isomers, alkylated fluoranthenes/pyrenes 65331 65493 64259 0.5

C2-228 Isomers, alkylated benzo[a]anthracenes/chrysenes 65332 65494 64260 0.5

C2-252 Isomers, alkylated benzopyrenes/perylenes 65333 65495 64261 0.5

C3-178 Isomers, alkylated phenanthrenes/anthracenes 65335 65497 64263 0.5

C3-202 Isomers, alkylated fluoranthenes/pyrenes 65336 65498 64264 0.5

C3-228 Isomers, alkylated benzo[a]anthracenes/chrysenes 65337 65499 64265 0.5

C3-252 Isomers, alkylated benzopyrenes/perylenes 65338 65500 64266 0.5

C4-178 Isomers, alkylated phenanthrenes/anthracenes 65340 65502 64268 0.5

C4-202 Isomers, alkylated fluoranthenes/pyrenes 65341 65503 64269 0.5

C4-228 Isomers, alkylated benzo[a]anthracenes/chrysenes 65342 65504 64270 0.5

C4-252 Isomers, alkylated benzopyrenes/perylenes 65343 65505 64271 0.5

C5-178 Isomers, alkylated phenanthrenes/anthracenes 65345 65507 64273 0.5

C5-202 Isomers, alkylated fluoranthenes/pyrenes 65346 65508 64274 0.5

C5-228 Isomers, alkylated benzo[a]anthracenes/chrysenes 65347 65509 64275 0.5

C5-252 Isomers, alkylated benzopyrenes/perylenes 65348 65510 64276 0.5

2-Fluorobiphenyl (surrogate) 91866 91875 90761 percent

Nitrobenzene-d5 (surrogate) 91867 91876 90768 percent

Terphenyl-d14 (surrogate) 91868 91877 90770 percent

Table 11B. Analyitcal results for Polycyclic Aromatic Hydrocarbon (PAH) and alkylated PAH compounds detected in air samples, 

processed at the U.S. Geological Survey’s National Water Quality Laboratory, from the Sweetwater Reservoir atmospheric site, 

San Diego County, California.

(Table 11B is provided separately as a Microsoft Excel® worksheet.)
60 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Table 12A. Pesticide compounds analyzed in air samples, processed at the U.S. Geological Survey National Water 

Quality Laboratory, from the Sweetwater Reservoir atmospheric site, San Diego County, California.

[The site-identification number is 324141117001601. Estimated reporting level assumes 315 cubic meters as the average air volume. Abbreviation: ng/m3, 

nanograms per cubic meter]

Compound Estimated reporting level 

(ng/m3)

Acetochlor 0.05

Alachlor 0.05

Atrazine 0.05

Benfluralin1 0.30

Carbaryl1 0.10

2-Chloro-2,6-diethylacetanilide 0.08

2-Chloro-4-isopropylamino-6-amino-s-triazine (CIAT) 0.11

Chlorpyrifos 0.06

Dacthal (DCPA) 0.05

Desulfinyl-fipronil 0.05

Diazinon 0.06

Dieldrin 0.11

Dimethoate 0.10

Ethion 0.13

2-Ethyl-6 methylaniline 0.11

Fenamiphos1 0.17

Fenamiphos sulfone1 0.06

Fenamiphos sulfoxide1 0.17

Fipronil1 0.05

Fipronil sulfide 0.06

Fipronil sulfone 0.06

Fonofos 0.06

Hexazinone1 0.06

Isofenphos 0.10

Metalaxyl 0.08

Methidathion 0.11

Metolachlor 0.05

Metribuzin 0.10

Myclobutanil 0.11

Parathion-methyl 0.06

Pendi-methilan 0.06

cis-Permethrin 0.11

trans-Permethrin 0.11

Phorate1 0.13

Phorate oxon1 0.14

Prometon 0.05

Prometryn 0.14

Propyzamide 0.06

Simazine 0.06

Terbufos 0.08

Terbuthylazine 0.05

Trifluralin1 0.30

Diazinon-d10 (surrogate) percent

α-HCH-d6 (surrogate) percent

1

Concentration estimated. Compound has poor recovery on the basis of laboratory set spikes.
Sampling Strategy, Sampling and Analytical Methods, Quality Assurance, and Results 61

Sweetwater Reservoir atmospheric site, San Diego County, California.

Table 12B. Analytical results for pesticide compounds detected in air samples, processed at the U.S. Geological Survey National Water Quality Laboratory, from the 

Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Air sampling concentrations in nanogram per cubic meter (ng/m3) unless noted. Laboratory reporting levels are listed on table 11A. Abbreviations: 

E, estimated or having a higher degree of uncertainty; g, gram; m3, cubic meter; GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PUF, polyurethane foam; NA, not analyzed; vol., volume; —, compound 

was not detected at a concentration above the laboratory reporting level; &, and]

Date 

(mm/dd/yyyy) Type Extraction set number Air vol. (m3

)

Particle 

weight 

(g)

Total 

suspended 

particulate 

(ng/m3

)

Benfluralin Carbaryl Chlor- pyrifos Dacthal (DCPA) Desulfinyl- fipronil Diazinon cis- Permethrin trans- Permethrin Simazine Tri- fluralin 

α-HCHd6,

surrogate 

(percent) 

Diazinond10, 

surrogate

(percent) 

11/17/2003 GFF 03.32308 127.4 0.0054 42.4

—

—

—

—

— 0.11

—

—

—

— 79.4 89.6

11/17/2003 Top PUF 03.32308 E0.16 0.12 0.06 0.84

—

—

— E0.26 97.5 115

11/17/2003 Bottom PUF 03.32308

—

—

—

—

—

—

—

—

— E0.07 87.1 94.5

TOTAL E0.16 0.12 0.06 0.95 0.33

11/29/2003 GFF 04.07205 112.3 0.0085 75.7

—

—

— E0.02

— 0.06 0.24 0.25

—

— 65.2 75.6

11/29/2003 Top & bottom PUF 04.07205 E0.12

—

— E0.04

— 0.32

—

—

— E0.19 77.9 88.5

TOTAL E0.12 0.06 0.38 0.24 0.25 E0.19

12/11/2003 GFF 04.07205 126.2 0.0070 55.5

—

—

—

—

— 0.08 0.11 0.11

—

— 58.4 71.2

12/11/2003 Top & bottom PUF 04.07205 E0.18

— 0.11 E0.04

— 0.47

—

—

— E0.27 73.4 86.7

TOTAL E0.18 0.11 E0.04 0.55 0.11 0.11 E0.27

12/23/2003 GFF 04.07205 124.7 0.0068 54.5

—

—

—

— E0.05 E0.01 0.11

—

— 62.0 70.3

12/23/2003 Top & bottom PUF 04.07205 E0.13

— 0.09 E0.04

— 0.35

—

—

— E0.22 77.9 90.0

TOTAL E0.13 0.09 E0.04 0.40 E0.01 0.11 E0.22

01/04/2004 GFF 04.07205 125.2 0.0058 46.3

—

—

—

—

—

— E0.08 E0.09

—

— 64.4 70.4

01/04/2004 Top & bottom PUF NA NA NA NA NA NA NA NA NA NA NA NA

TOTAL E0.08 E0.09

01/16/2004 GFF 04.07205 122.9 0.0130 105.8

—

—

—

—

—

—

—

— 0.11

— 58.0 68.2

01/16/2004 Top & bottom PUF 04.07205 E0.12

—

— 0.05 0.27

—

—

— E0.21 77.8 94.8

TOTAL E0.12 0.05 0.27 0.11 E0.21

01/28/2004 GFF 04.07205 123.0 0.0042 34.2

—

—

—

—

—

—

—

—

—

— 57.6 65.6

01/28/2004 Top & bottom PUF 04.07205 E0.11

—

— E0.04

— 0.24

—

—

— E0.18 67.9 79.9

TOTAL E0.11 E0.04 0.24 E0.18

02/09/2004 GFF 04.07205 125.6 0.0062 49.4

—

—

—

—

— 0.12

—

—

—

— 62.4 75.2

02/09/2004 Top & bottom PUF 04.07205 E0.08

—

— E0.02

—

—

—

—

— E0.12 83.4 97.6

TOTAL E0.08 E0.02 0.12 E0.12

02/21/2004 GFF 04.07205 121.1 0.0054 44.6

—

—

—

—

— 0.08 0.11 0.12

—

— 66.1 76.2

02/21/2004 Top & bottom PUF 04.07205 E0.09

— 0.08 E0.03

— 0.13

—

—

— E0.14 77.5 87.2

TOTAL E0.09 0.08 E0.03 0.21 0.11 0.12 E0.14

03/04/2004 GFF 04.07205 122.0 0.0076 62.3

—

—

—

—

—

—

—

—

—

— 48.4 57.6

03/04/2004 Top & bottom PUF 04.07205 E0.08

— 0.07

—

— 0.10

—

—

— E0.13 81.5 90.5

TOTAL E0.08 0.07 0.10 E0.13

03/16/2004 GFF 04.24305 149.8 0.0110 73.4

—

—

—

—

—

—

—

— 0.09

— 92.0 113

03/16/2004 Top & bottom PUF NA NA NA NA NA NA NA NA NA NA NA NA

TOTAL 0.09

Table 12B. Analytical results for pesticide compounds detected in air samples, processed at the U.S. Geological Survey National Water Quality Laboratory, from the 
62 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 12B. Analytical results for pesticide compounds detected in air samples, processed at the U.S. Geological Survey National Water Quality Laboratory, from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Air sampling concentrations in nanogram per cubic meter (ng/m3) unless noted. Laboratory reporting levels are listed on table 11A. Abbreviations: E, estimated or having a higher degree of uncertainty; g, gram; m3, cubic meter; GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PUF, polyurethane foam; NA, not analyzed; vol., volume; —, compound was not detected at a concentration above the laboratory reporting level; &, and] Date (mm/dd/yyyy) Type Extraction set number Air vol. (m3

)

Particle 

weight 

(g)

Total 

suspended 

particulate 

(ng/m3

)

Benfluralin Carbaryl Chlor- pyrifos Dacthal (DCPA) Desulfinyl- fipronil Diazinon cis- Permethrin trans- Permethrin Simazine Tri- fluralin 

α-HCHd6,

surrogate 

(percent) 

Diazinond10, 

surrogate

(percent) 

03/28/2004 GFF 04.24305 253.4 0.0156 61.6

— E0.06

— E0.04

—

— 0.24 0.28 0.09

— 85.5 112

03/28/2004 Top & bottom PUF 04.24305 E0.08

— 0.18 0.06

— 0.38 E0.10 E0.08

— E0.19 76.0 103

TOTAL E0.08 E0.06 0.18 0.10 0.38 0.34 0.36 0.09 E0.19

04/09/2004 GFF 04.24305 364.0 0.0200 54.9

— E0.04

—

—

—

—

—

— E0.05 87.4 119

04/09/2004 Top & bottom PUF 04.24305 E0.05

— 0.10 0.09

— 0.11

—

—

—

— 83.8 116

TOTAL E0.05 E0.04 0.10 0.09 0.11

—

04/21/2004 GFF 04.24305 401.9 0.0152 37.8

—

—

— E0.02

— E0.03 E0.04 E0.02 E0.03

— 84.9 114

04/21/2004 Top & bottom PUF 04.24305 E0.05

— 0.08 0.09

— 0.11

—

—

— E0.10 78.3 109

TOTAL E0.05 0.08 0.11 0.14 E0.04 E0.02 E0.03 E0.10

05/03/2004 GFF 04.24305 380.5 0.0234 61.5

—

—

—

— E0.03

— E0.09 0.16 E0.05

— 80.7 111

05/03/2004 Top & bottom PUF 04.24305 E0.05

— 0.19 0.05

— 0.64 0.06

—

— E0.08 68.4 102

TOTAL E0.05 0.19 0.05 E0.03 0.64 0.14 0.16 E0.05 E0.08

05/15/2004 GFF 04.24305 393.4 0.0224 56.9

— E0.04

—

—

—

— E0.04 E0.02 E0.03

— 72.7 99.7

05/15/2004 Top & bottom PUF 04.24305 E0.04

— 0.11 0.06

— 0.20

—

—

— E0.09 84.4 121

TOTAL E0.04 E0.04 0.11 0.06 0.20 E0.04 E0.02 E0.03 E0.09

05/27/2004 GFF 04.24305 412.2 0.0138 33.5

—

—

— E0.02 E0.03

— E0.04

—

—

— 76.9 104

05/27/2004 Top & bottom PUF 04.24305 E0.04

— 0.08 0.07 E0.03 0.15

—

—

— E0.12 84.9 114

TOTAL E0.04 0.08 0.09 0.06 0.15 E0.04 E0.12

06/08/2004 GFF 04.24305 391.9 0.0154 39.3

—

—

— E0.02

—

—

—

—

—

— 67.7 96.3

06/08/2004 Top & bottom PUF 04.24305 E0.04

— 0.06 0.07

— 0.08

—

—

— E0.07 82.7 112

TOTAL E0.04 0.06 0.09 0.08 E0.07

06/20/2004 GFF 04.24305 396.2 0.0150 37.9

— E0.04

— E0.02 E0.03

—

—

—

—

— 79.1 98.2

06/20/2004 Top & bottom PUF 04.24305 E0.04

— 0.07 0.06

— 0.08

—

—

— E0.06 58.2 81.3

TOTAL E0.04 E0.04 0.07 0.08 E0.03 0.08 E0.06

07/02/2004 GFF 04.24305 401.7 0.0138 34.4

—

—

—

— E0.03

—

—

—

—

— 77.5 99.2

07/02/2004 Top & bottom PUF 04.24305 E0.04

— 0.09 0.06

— 0.18

—

—

— E0.08 99.8 136

TOTAL E0.04 0.09 0.06 E0.03 0.18 E0.08

07/14/2004 GFF 04.24305 401.3 0.0184 45.9

— E0.04

—

— E0.03

— E0.06 0.09

—

— 82.5 116

07/14/2004 Top & bottom PUF 04.24305 E0.04

— 0.17 0.06

— E0.03

—

—

— E0.08 89.3 125

TOTAL E0.04 E0.04 0.17 0.06 E0.03 E0.03 E0.06 0.09 E0.08

07/26/2004 GFF 04.24305 386.9 0.0170 43.9

— E0.04

—

— E0.03

— E0.05 0.09

—

— 77.2 102

07/26/2004 Top & bottom PUF 04.24305 E0.04

— 0.11 0.07

— 0.31 E0.05 0.04

— E0.06 69.4 94.8

TOTAL E0.04 E0.04 0.11 0.07 E0.03 0.31 0.11 0.13 E0.06

08/19/2004 GFF 04.24305 396.7 0.0166 41.8

— E0.04

—

— E0.03

— E0.05 0.06

—

— 78.3 112

08/19/2004 Top & bottom PUF 04.24305 E0.04

— 0.12 0.05 E0.03 0.12

—

—

— E0.08 83.6 117

TOTAL E0.04 E0.04 0.12 0.05 0.06 0.12 E0.05 0.06 E0.08
Summary 63

Table 13. Analytical results for metals in air samples, processed at the U.S. Geological Survey Geologic Division laboratory, collected 

from the Sweetwater Reservoir atmospheric site, San Diego County, California.

(Table 13 is provided separately as a Microsoft Excel® worksheet.)

Surficial Bed-Sediment Methods

Surficial bed-sediment samples were collected by using 

a stainless steel 15 by 15 by 15 cm Ekman grab sampler 

(Wildco, Saginaw, Mich.). The sampler was cleaned with a 

mild soap solution and rinsed with deionized water prior to 

sampling and between samples. After the boat was anchored 

(connected to a buoy at the surface) at each sampling site, 

the sampler was lowered to the bottom of the reservoir; 

a messenger was then lowered to close the sampler. The 

sampler was brought to the surface, and the top 1 cm was 

subsampled for analysis. The sample from site LFDD was 

collected by wading into the river and scooping a sample 

into the appropriate bottle. Surficial bed-sediment samples 

were analyzed for 37 metals using methods described in 

Fishman (1993) and Garbarino and others (2006) at the 

USGS Crustal Geophyscis and Geochemistry Science 

Center (Geologic Division Laboratory) in Denver, Colorado. 

Surficial bed-sediment samples were also analyzed for organic 

constituents—22 parent PAHs, 10 specific alkyl-PAH isomers, 

a homologous series of 25 alkyl-PAH isomers, total PCBs, and 

16 OC pesticides—using methods described by Noriega and 

others (2004) and Olson and others (2004).

Surficial Bed-Sediment Quality Assurance

Two types of QC samples were used for quality assuring 

bed sediment data—matrix spikes and replicates. Additionally, 

surrogate compounds were added to PAH and OC samples at 

the laboratory to monitor sample-specific performance of the 

analytical method. For PAHs, surrogates 2-fluorobiphenyl, 

nitrobenzene-d5, and p-terphenyl-d14 were added. For OCs, 

surrogates a-HCH-d6, isodrin, and nonachlorobiphenyl were 

added.

Replicate samples were processed for PAHs, OCs, 

and metals. Two types of soil standard reference material 

(SRM) were used as QC checks of the digestion process and 

instrument calibration for the analysis of metals in surficial 

bed sediment for 2004 samples; they are the NIST 2709 

(National Institute of Standards and Technology, 1991a) and 

the Canadian Certified Reference Materials Project (CCRMP) 

SO-2 and SO-4 standards (Potts and others, 1992). Only the 

NIST 2709 soil SRM was used for the 2009 sampling.

Surficial Bed-Sediment Results

Surficial bed-sediment samples collected for PAHs in 

October 2004 and August 2009 are given in table 14. Of 

the 53 compounds analyzed for PAHs, 22 compounds had 

1 or more detections, of which, 10 were detected in about 

1⁄2 of the samples. Surficial bed-sediment samples collected 

for OCs in August 2009 are given in table 15. Of the 

22 compounds analyzed for OCs, only 6 compounds had 1 

or more detections. Surficial bed-sediment samples collected 

for 37 metals in October 2004 and August 2009 are given in 

table 16; silver was the only metal not detected.

Summary

The primary objective of this study was to monitor 

changes in composition and concentration of compounds in 

the air and water before, during, and after the construction of 

a major thoroughfare (State Route 125) being built upwind 

of the Sweetwater Reservoir. To accomplish this, the study 

was divided into three phases. Phase One sampling started 

in September 1998 and was designed to establish baseline 

conditions for target compounds (primary sampling) in 

terms of detection frequency and concentration of select 

organic and inorganic compounds in air and water. Phase 

Two sampling began October 2004 and lasted 3 years. Phase 

Two was designed to monitor the air and water quality in and 

around the Sweetwater Reservoir during construction of State 

Route 125. Phase Three sampling began in October 2007, 

after construction of the roadway was completed, to assess the 

effect this alignment project may have on the water quality 

in the Sweetwater Reservoir. Phase Three sampling ended 

in August 2009. This report provides data from water, air, 

and surficial bed-sediment samples that were collected from 

October 2003 through August 2009 (water years 2004–09). 

This report is the fourth in a series of reports that describe 

the monitoring activities and present the data. Interpretative 

analysis of the environmental and quality-control data for 

targeted compounds to address the objectives of the study is 

not included in this data report.

Prior to any reservoir water sampling, depth profiles 

of dissolved oxygen, pH, specific conductance, and water 

temperature were recorded at each reservoir sampling 

location. Compounds analyzed in water samples and their 

results are in tables 4A to 9B. Compounds analyzed in 

air samples and their results are in tables 10A through 13. 

Compounds analyzed in surficial bed-sediment samples are 

given in tables 14 through 16. Quality-control data for all 

compounds are located in appendixes A–C. Quality-control 

data for compounds in water samples are in tables A1A to 

A6C. Quality-control data for compounds in air samples are 

in tables B1A to B6C. Quality-control data for surficial bedsediment samples are in tables C1 to C3C. 
64 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California. [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample weight (grams) (62597) Acenaphthene (62549) Acenaphthylene (62550) Anthracene (62551) Benzo[a]anthracene (62552) Benzo[a]pyrene (62553) Benzo[

b]fluoranthene 

(62554) 

Benzo[e]pyrene 

(62555) 

Benzo[

g,h,i]perylene 

(62556) 

[LRL] [90,30,10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10]

Sweetwater Reservoir near pump tower (SWR01)

10/13/2004 11:00 2.8

—

—

—

—

—

—

—

—

08/10/2009 12:45 3.2

—

—

—

—

—

—

—

—

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9

—

—

—

—

— E10 E5.8

—

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9

—

—

—

—

—

—

—

—

08/10/2009 13:15 8.4

—

—

—

—

— E20

—

—

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1

—

—

—

—

— E20

—

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2

—

—

—

—

—

—

—

—

10/13/2004 16:20 25.0

—

—

—

—

—

—

—

—

08/10/2009 14:00 19.9

—

—

—

—

— E4.6

—

—

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1

—

—

—

—

—

—

—

—

08/10/2009 14:30 13.5

—

—

— E8.5

—

—

—

—

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7

—

—

—

—

—

—

—

—

08/11/2009 11:45 8.3

—

—

—

—

— E20

—

—

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7

—

—

—

—

—

—

—

—

08/11/2009 12:00 10.9

—

—

— 20 20 40 20

—
Summary 65

Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy) 

Time 

(hh:mm)

Sample 

weight 

(grams) 

(62597) 

Benzo[k]

fluoranthene 

(62557) 

Chrysene 

(62558) 

1,2-

Dimethylnaphthalene 

(62538) 

1,6-

Dimethylnaphthalene 

(62539) 

4HCyclopenta[def]

phenanthrene 

(62547) 

Dibenzo[a,h]

anthracene 

(62560) 

2,6-

Dimethylnaphthalene 

(62544) 

2-

Ethylnaphthalene 

(62545) 

[LRL] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10]

Sweetwater Reservoir near pump tower (SWR01)

10/13/2004 11:00 2.8 — — — 130 — — 510 —08/10/2009 12:45 3.2 — — — 20 — — 140 —

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9 — E3.3 — E7.5 — — 60 —

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9 — — — 40 — — 170 —08/10/2009 13:15 8.4 — E3.3 — 30 — — 270 —

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1 — — — E10 — — 100 —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2 — — — — — — 30 —10/13/2004 16:20 25.0 — — — — — — — —08/10/2009 14:00 19.9 — E1.4 — — — — — —

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1 — — — — — — 90 —08/10/2009 14:30 13.5 — E5.7 E3.4 E20 — — E30 E5.5

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7 — — — 50 — — 200 —

08/11/2009 11:45 8.3 — E4.1 — — — — 260 —

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7 — — — — — — — —

08/11/2009 12:00 10.9 — 20 — 10 — — — —
66 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample weight (grams) (62597) Fluoranthene (62561)

9HFluorene 

(62548) 

Indeno[1,2,3-cd]pyrene 

(62562)

1-Methyl-9

Hfluorene 

(62540)

2-

Methylanthracene 

(62546)

1-

Methylphenanthrene 

(62541)

1-

Methylpyrene 

(62542)

Naphthalene 

(62563)

[LRL] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10]

Sweetwater Reservoir near pump tower (SWR01)

10/13/2004 11:00 2.8

—

—

—

—

—

—

—

—

08/10/2009 12:45 3.2 E20

—

—

—

—

—

— 20

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9 E10

—

—

—

—

—

— E3.4

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9 E20

—

—

—

—

—

—

—

08/10/2009 13:15 8.4 E10

—

—

—

—

—

— E3.7

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1 E10

—

—

—

—

—

— E4.2

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2

—

—

—

—

—

—

—

—

10/13/2004 16:20 25.0 E9.2

—

—

—

—

—

—

—

08/10/2009 14:00 19.9 E4.1

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1

—

—

—

—

—

—

—

—

08/10/2009 14:30 13.5 E10

—

—

—

—

—

— E40

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7 E30

—

—

—

—

—

—

—

08/11/2009 11:45 8.3 E10

—

—

—

—

—

— E2.9

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7

—

—

—

—

—

—

—

—

08/11/2009 12:00 10.9 30

—

—

—

—

—

— E10
Summary 67

Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy) 

Time 

(hh:mm)

Sample 

weight 

(grams) 

(62597) 

Perylene 

(62565)

Phenanthrene 

(62566) 

Pyrene 

(62568) 

2,3,6-

Trimethylnaphthalene 

(62543)

C1-128 Isomers 

(62569)

C1-178 Isomers 

(62570)

C1-202 Isomers 

(62571)

C1-228 Isomers 

(62572)

[LRL] [90, 10] [90, 10] [90, 10] [90, 10] [90, 10] [210, 10] [130, 10] [90, 10]

Sweetwater Reservoir near pump tower (SWR01)

10/13/2004 11:00 2.8 — — — — E190 — — —08/10/2009 12:45 3.2 — E30 E10 — E220 E170 — —

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9 90 E10 E10 — E110 E50 — —

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9 160 — E20 — E40 — — —08/10/2009 13:15 8.4 240 — E10 — E290 E130 — —

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1 160 — E10 — E200 E60 — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2 30 — — — E9 — — —10/13/2004 16:20 25.0 — — E7.2 — — — — —08/10/2009 14:00 19.9 E4.3 E3.7 E3.6 — E20 E10 — —

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1 — — — — E20 — — —08/10/2009 14:30 13.5 — E30 E10 E4.3 E120 E70 E10 —

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7 80 — E20 — E50 — — —

08/11/2009 11:45 8.3 E70 E7.8 E10 — E300 E160 — —

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7 — — — — — — — —

08/11/2009 12:00 10.9 30 30 30 — E220 E80 E20 —
68 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample weight (grams) (62597) C1-252 Isomers (62573) C2-128 Isomers (62574) C2-178 Isomers (62575) C2-202 Isomers (62576) C2-228 Isomers (62577) C2-252 Isomers (62578) C3-128 Isomers (62579) C3-178 Isomers (62580) [LRL] [320, 10] [500, 10] [120, 10] [140, 10] [150, 10] [200, 10] [200, 10] [130, 10] Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 2.8

— E650

—

—

—

—

—

—

08/10/2009 12:45 3.2

— E190

—

—

—

—

—

—

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9

— E80

—

—

—

—

—

—

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9

— E210

—

—

—

—

—

—

08/10/2009 13:15 8.4

— E310

—

—

—

—

—

—

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1

— E120

—

—

—

—

—

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2

— E40

—

—

—

—

—

—

10/13/2004 16:20 25.0

—

—

—

—

—

—

—

—

08/10/2009 14:00 19.9

— E10

—

—

—

—

—

—

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1

— E100

—

—

—

—

—

—

08/10/2009 14:30 13.5

— E80

— E80

—

— E180

—

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7

— E260

—

—

—

— E100

—

08/11/2009 11:45 8.3

— E280

—

—

—

—

—

—

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7

—

—

—

—

—

—

—

—

08/11/2009 12:00 10.9

— E100

—

—

—

—

—

—
Summary 69

Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy) 

Time 

(hh:mm)

Sample 

weight 

(grams) 

(62597) 

C3-202 Isomers 

(62581)

C3-228 Isomers 

(62582)

C3-252 Isomers 

(62583)

C4-128 Isomers 

(62584)

C4-178 Isomers 

(62585)

C4-202 Isomers 

(62586)

C4-228 Isomers 

(62587)

C4-252 Isomers 

(62588)

[LRL] [130, 10] [130, 10] [180, 10] [400, 10] [90, 10] [120, 10] [300, 10] [200, 10]

Sweetwater Reservoir near pump tower (SWR01)

10/13/2004 11:00 2.8 — — — — — — — —08/10/2009 12:45 3.2 — — — — — — — —

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9 — — — — — — — —

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9 — — — — — — — —08/10/2009 13:15 8.4 — — — — — — — —

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1 — — — — — — — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2 — — — — — — — —10/13/2004 16:20 25.0 — — — — — — — —08/10/2009 14:00 19.9 — — — — — — — —

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1 — — — — — — — —08/10/2009 14:30 13.5 E120 — — — — — — —

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7 — — — — — — — —

08/11/2009 11:45 8.3 — — — — — — — —

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7 — — — — — — — —

08/11/2009 12:00 10.9 — — — — — — — —
70 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 14. Analytical results for polycyclic aromatic hydrocarbon (PAHs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample weight (grams) (62597) C5-128 Isomers (62589) C5-178 Isomers (62590) C5-202 Isomers (62591) C5-228 Isomers (62592) C5-252 Isomers (62593) 2-Fluorobiphenyl, surrogate (percent) (62594) Nitrobenzene-d5, surrogate (percent) (62595) 

p-Terphenyld14, 

surrogate 

(percent) 

(62596)

[LRL] [200, 10] [200, 10] [100, 10] [500, 10] [200, 10]

Sweetwater Reservoir near pump tower (SWR01)

10/13/2004 11:00 2.8

—

—

—

—

— 58.7 61.3 E38.3

08/10/2009 12:45 3.2

—

—

—

—

— 66.4 70.1 65.1

Sweetwater Reservoir near Vista del Lago station (SWR02)

08/10/2009 13:00 12.9

—

—

—

—

— 65.5 67.9 70.0

Sweetwater Reservoir center minimum pool (SWR03)

10/13/2004 11:40 8.9

—

—

—

—

— 61.1 49.1 58.7

08/10/2009 13:15 8.4

—

—

—

—

— 67.9 69.4 70.3

Sweetwater Reservoir near recreation area (SWR04)

08/10/2009 13:30 9.1

—

—

—

—

— 55.7 59.5 61.3

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/13/2004 12:20 19.2

—

—

—

—

— 59.3 57.5 75.5

10/13/2004 16:20 25.0

—

—

—

—

— 62.1 53.2 63.1

08/10/2009 14:00 19.9

—

—

—

—

— 62.8 66.0 78.9

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/13/2004 15:30 19.1

—

—

—

—

— 63.2 59.3 65.1

08/10/2009 14:30 13.5

—

—

—

—

— 67.4 69.3 71.4

Loveland Reservoir near dam (LLR01)

10/14/2004 11:10 8.7

—

—

—

—

— 64.9 65.2 55.2

08/11/2009 11:45 8.3

—

—

—

—

— 66.4 68.9 68.2

Loveland Reservoir east-end near inlet (LLR02)

10/14/2004 12:00 22.7

—

—

—

—

— 52.9 45.5 73.2

08/11/2009 12:00 10.9

—

—

—

—

— 74.7 74.5 76.9
Summary 71

Table 15. Analytical results for organochlorine (OCs) and polychlorinated biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 5504, from the Sweetwater Reservoir watershed, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number in parentheses below each compound name, the data parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sample 

weight 

(grams) 

(62597)

Aldrin 

(39333)

Aroclor 1016 

plus 

Aroclor 1242 

(46343)

Aroclor 1254 

(39507)

Aroclor 1260 

(39511)

cisChlordane 

(62802)

transChlordane 

(62803)

p,p’-DDD 

(39363)

p,p’-DDE 

(39368)

p,p’-DDT 

(39373)

Sweetwater Reservoir near 

pump tower (SWR01)

08/10/2009 12:45 3.2 — — — 52 — — — — —

Sweetwater Reservoir near Vista 

del Lago station (SWR02)

08/10/2009 13:00 12.9 — E2.2 — E5 — — — 1.9 —

Sweetwater Reservoir center 

minimum pool (SWR03)

08/10/2009 13:15 8.4 — — — — — — — — —

Sweetwater Reservoir near 

recreation area (SWR04)

08/10/2009 13:30 9.1 — — — — — — — — —

Sweetwater Reservoir eastend reservoir-fill boundary 

(SWR06)

08/10/2009 14:00 19.9 — — — — — — — E0.8 —

Sweetwater River at low-flow 

diversion dam upstream from Sweetwater Reservoir (LFDD)

08/10/2009 14:30 13.5 — — E3 8 — E0.4 — — —

Loveland Reservoir near dam 

(LLR01)

08/11/2009 11:45 8.3 — — — — — — — — —

Loveland Reservoir east-end 

near inlet (LLR02)

08/11/2009 12:00 10.9 — — — — — — — — —
72 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 15. Analytical results for organochlorine (OCs) and polychlorinated biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 5504, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number in parentheses below each compound name, the data parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Sample weight (grams) (62597) Dieldrin (39383)

α-Endosulfan 

(39389)

Endrin 

(39393)

α-HCH 

(39076)

β-HCH 

(34257)

Heptachlor 

(39413)

Heptachlor 

epoxide 

(39423)

Hexachlorobenzene 

(39701)

Sweetwater Reservoir near 

pump tower (SWR01)

08/10/2009 12:45 3.2

—

—

—

—

—

—

—

—

Sweetwater Reservoir near Vista 

del Lago station (SWR02)

08/10/2009 13:00 12.9

—

—

—

—

—

—

—

—

Sweetwater Reservoir center 

minimum pool (SWR03)

08/10/2009 13:15 8.4

—

—

—

—

—

—

—

—

Sweetwater Reservoir near 

recreation area (SWR04)

08/10/2009 13:30 9.1

—

—

—

—

—

—

—

—

Sweetwater Reservoir eastend reservoir-fill boundary 

(SWR06)

08/10/2009 14:00 19.9

—

—

—

—

—

—

—

—

Sweetwater River at low-flow 

diversion dam upstream from Sweetwater Reservoir (LFDD)

08/10/2009 14:30 13.5

—

—

—

—

—

—

—

—

Loveland Reservoir near dam 

(LLR01)

08/11/2009 11:45 8.3

—

—

—

—

—

—

—

—

Loveland Reservoir east-end 

near inlet (LLR02)

08/11/2009 12:00 10.9

—

—

—

—

—

—

—

—
Summary 73

Table 15. Analytical results for organochlorine (OCs) and polychlorinated biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 5504, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number in parentheses below each compound name, the data parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sample 

weight 

(grams) 

(62597)

Lindane 

(39343)

p,p’-

Methoxychlor 

(39481)

Mirex 

(39758)

transNonachlor 

(62804)

Toxaphene 

(39403)

α-HCH-d6, 

surrogate 

(percent) 

(62837)

Isodrin, 

surrogate

(percent)

(62836)

Nonachlorobiphenyl, 

surrogate

(percent) 

(62838)

Sweetwater Reservoir near 

pump tower (SWR01)

08/10/2009 12:45 3.2 — — — — — 59.6 71.1 69.1

Sweetwater Reservoir near Vista 

del Lago station (SWR02)

08/10/2009 13:00 12.9 — — — — — 93.8 108 112

Sweetwater Reservoir center 

minimum pool (SWR03)

08/10/2009 13:15 8.4 — — — — — 59.5 69.2 70.7

Sweetwater Reservoir near 

recreation area (SWR04)

08/10/2009 13:30 9.1 — — — — — 66.7 89.4 79.6

Sweetwater Reservoir eastend reservoir-fill boundary 

(SWR06)

08/10/2009 14:00 19.9 — — — — — 74.4 37.7 38.2

Sweetwater River at low-flow 

diversion dam upstream from Sweetwater Reservoir (LFDD)

08/10/2009 14:30 13.5 — — — E0.7 — 68.2 67.9 72.6

Loveland Reservoir near dam 

(LLR01)

08/11/2009 11:45 8.3 — — — — — 59.5 51.6 72.0

Loveland Reservoir east-end 

near inlet (LLR02)

08/11/2009 12:00 10.9 — — — — — 50.0 69.6 70.2
74 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 16. Analytical results for metals in surficial bed-sediment samples, using the U.S. Geological Survey Geologic Division laboratory, collected from the Sweetwater Reservoir watershed, San Diego County, California. [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are reported as milligrams per kilogram (mg/kg). Abbreviations: hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Aluminum Antimony Arsenic Barium Beryllium Bismuth Cadmium [LRL] [50] [0.04] [2] [0.2] [0.03] [0.06] [0.007] Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 22,500 1.8 NA 570 0.41 0.08 0.14 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:45 19,900 0.91 64.7 466 0.58 0.06 0.07 Sweetwater Reservoir near Vista del Lago station (SWR02) 08/10/2009 13:00 86,400 0.58 6.9 450 1.3 0.18 0.24 Sweetwater Reservoir center minimum pool (SWR03) 10/13/2004 11:40 110,000 0.70 NA 457 1.3 0.19 0.23 Sweetwater Reservoir center minimum pool (SWR03) 08/10/2009 13:15 95,000 0.34 7.2 472 1.4 0.15 0.27 Sweetwater Reservoir near recreation area (SWR04) 08/10/2009 13:30 89,900 0.34 6.8 480 1.4 0.14 0.24 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:20 90,800 0.23 NA 487 1.1 0.07 0.14 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 16:20 92,300 0.25 NA 467 0.99 0.06 0.17 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 08/10/2009 14:00 95,800

— 2.5 600 1.7

— 0.15

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

10/13/2004 15:30 80,400 0.23 NA 407 0.77 

— 0.10

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

08/10/2009 14:30 74,800 0.66 13.7 490 1.3 0.07 0.26

Loveland Reservoir near dam (LLR01) 10/14/2004 11:10 112,000 0.71 NA 598 1.3 0.16 0.27 Loveland Reservoir near dam (LLR01) 08/11/2009 11:45 121,000 0.10 7.3 586 1.5 0.14 0.24Loveland Reservoir east-end near source inlet (LLR02) 10/14/2004 12:00 91,500 0.2 NA 355 0.81 

— 0.08 

Loveland Reservoir east-end near source inlet (LLR02) 08/11/2009 12:00 109,000

— 4.9 470 1.3 0.11 0.27

Sweetwater Reservoir atmospheric site at Sweetwater Dam (AIR01) 10/14/2004 14:30 88,700 0.78 NA 370 0.65 0.09 0.26 
Summary 75

Table 16. Analytical results for metals in surficial bed-sediment samples, using the U.S. Geological Survey Geologic Division laboratory, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are reported as milligrams per kilogram (mg/kg). Abbreviations: hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm) Calcium Cerium Cesium Chromium Cobalt Copper [LRL] [100] [0.1] [0.003] [0.5] [0.03] [2]

Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 27,400 14.6 0.97 62.7 22.4 102 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:45 25,600 13.7 0.94 78.0 13.8 198Sweetwater Reservoir near Vista del Lago station (SWR02) 08/10/2009 13:00 36,400 44.4 3.1 50.7 22.3 86.1Sweetwater Reservoir center minimum pool (SWR03) 10/13/2004 11:40 27,600 59.1 5.3 69.9 22.3 113 Sweetwater Reservoir center minimum pool (SWR03) 08/10/2009 13:15 38,700 54.0 5.0 64.4 20.1 114Sweetwater Reservoir near recreation area (SWR04) 08/10/2009 13:30 38,700 51.9 4.3 56.6 23.0 106Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:20 38,400 41.2 3.9 65.2 21.8 26.2 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 16:20 42,800 32.0 3.6 62.3 21.1 29.0 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 08/10/2009 14:00 36,800 44.2 5.0 69.5 24.6 36.4Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

10/13/2004 15:30 44,100 17.8 1.1 31.5 11.5 9.2 

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

08/10/2009 14:30 27,500 30.7 4.1 24.1 9.9 23.8

Loveland Reservoir near dam (LLR01) 10/14/2004 11:10 28,700 87.6 5.8 50.3 21.7 59.6 Loveland Reservoir near dam (LLR01) 08/11/2009 11:45 17,800 74.9 6.2 56.5 22.3 62.7Loveland Reservoir east-end near source inlet (LLR02) 10/14/2004 12:00 39,900 17.6 1.6 31.2 12.4 12.5 Loveland Reservoir east-end near source inlet (LLR02) 08/11/2009 12:00 25,700 49.7 5.5 71.8 30.8 71.3

Sweetwater Reservoir atmospheric site at Sweetwater Dam (AIR01) 10/14/2004 14:30 44,400 44.2 4.7 56.9 34.1 102 
76 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 16. Analytical results for metals in surficial bed-sediment samples, using the U.S. Geological Survey Geologic Division laboratory, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are reported as milligrams per kilogram (mg/kg). Abbreviations: hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Gallium Iron Lanthanum Lead Lithium Magnesium [LRL] [0.02] [50] [0.05] [0.4] [0.3] [6] Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 7.2 295,000 7.9 7.46 8.8 4,580 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:45 6.1 205,000 7.1 7.82 13.0 3,880 Sweetwater Reservoir near Vista del Lago station (SWR02) 08/10/2009 13:00 16.9 57,600 22.6 17.4 34.9 13,600 Sweetwater Reservoir center minimum pool (SWR03) 10/13/2004 11:40 22.5 74,600 32.3 20.1 54.6 15,200 Sweetwater Reservoir center minimum pool (SWR03) 08/10/2009 13:15 20.7 67,600 28.2 20.6 52.2 14,300 Sweetwater Reservoir near recreation area (SWR04) 08/10/2009 13:30 18.4 55,900 27.0 20.4 43.1 13,500 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:20 18.2 58,900 21.6 9.72 21.4 21,600 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 16:20 18.2 57,600 16.6 10.2 21.8 23,600 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 08/10/2009 14:00 19.5 59,600 22.4 11.7 31.8 22,400 Sweetwater River at low-flow diversion upstream from Sweetwater Reservoir (LFDD) 10/13/2004 15:30 13.8 31,400 8.8 7.74 7.0 12,100 Sweetwater River at low-flow diversion upstream from Sweetwater Reservoir (LFDD) 08/10/2009 14:30 15.8 41,900 15.9 27.3 19.7 8,420 Loveland Reservoir near dam (LLR01) 10/14/2004 11:10 24.1 65,500 44.8 26.3 50.4 12,100 Loveland Reservoir near dam (LLR01) 08/11/2009 11:45 25.3 66,400 38.6 25.3 54.9 12,500 Loveland Reservoir east-end near source inlet (LLR02) 10/14/2004 12:00 15.4 33,200 9.3 7.47 7.6 13,000 Loveland Reservoir east-end near source inlet (LLR02) 08/11/2009 12:00 21.4 73,400 26.5 22.9 38.4 17,700 Sweetwater Reservoir atmospheric site at Sweetwater Dam (AIR01) 10/14/2004 14:30 18.3 87,600 20.8 13.6 21.3 30,100
Summary 77

Table 16. Analytical results for metals in surficial bed-sediment samples, using the U.S. Geological Survey Geologic Division laboratory, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are reported as milligrams per kilogram (mg/kg). Abbreviations: hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm) Manganese Molybdenum Nickel Niobium Phosphorus Potassium [LRL] [0.7] [0.05] [0.3] [0.1] [5] [20]

Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 7,240 6.6 25.1 5.0 3,300 2,580Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:45 4,570 3.1 30.6 2.6 2,770 2,510Sweetwater Reservoir near Vista del Lago station (SWR02) 08/10/2009 13:00 1,190 1.3 18.9 8.4 681 11,600Sweetwater Reservoir center minimum pool (SWR03) 10/13/2004 11:40 1,570 2.2 30.1 12.0 1,040 13,000Sweetwater Reservoir center minimum pool (SWR03) 08/10/2009 13:15 1,650 2.2 27.0 9.6 1,110 11,800Sweetwater Reservoir near recreation area (SWR04) 08/10/2009 13:30 1,460 1.4 23.8 9.4 736 12,900Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:20 1,200 0.51 15.9 11.0 345 14,700Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 16:20 1,100 0.49 16.3 9.7 413 14,400Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 08/10/2009 14:00 1,080 0.24 20.6 11.0 439 16,800Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

10/13/2004 15:30 891 0.30 5.0 4.8 186 11,700

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

08/10/2009 14:30 1,750 1.3 8.0 10.0 661 13,800

Loveland Reservoir near dam (LLR01) 10/14/2004 11:10 4,580 8.0 23.0 13.0 1,060 13,200Loveland Reservoir near dam (LLR01) 08/11/2009 11:45 3,180 3.2 25.7 12.0 1,080 13,900Loveland Reservoir east-end near source inlet (LLR02) 10/14/2004 12:00 622 0.28 7.1 3.5 165 11,100Loveland Reservoir east-end near source inlet (LLR02) 08/11/2009 12:00 1,120 1.2 33.8 8.4 874 13,600

Sweetwater Reservoir atmospheric site at Sweetwater Dam (AIR01) 10/14/2004 14:30 1,560 0.74 20.6 8.1 1,380 14,000
78 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed Table 16. Analytical results for metals in surficial bed-sediment samples, using the U.S. Geological Survey Geologic Division laboratory, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are reported as milligrams per kilogram (mg/kg). Abbreviations: hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Rubidium Scandium Silver Sodium Strontium Thallium [LRL] [0.01] [0.04] [2] [20] [0.8] [0.08] Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 14.2 5.7 

— 3,050 436 0.11 

Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:45 14.5 5.2

— 2,980 170 2.52

Sweetwater Reservoir near Vista del Lago station (SWR02) 08/10/2009 13:00 58.1 22.8

— 15,100 227 8.30

Sweetwater Reservoir center minimum pool (SWR03) 10/13/2004 11:40 81.3 27.6 

— 5,320 201 0.61 

Sweetwater Reservoir center minimum pool (SWR03) 08/10/2009 13:15 75.7 23.9

— 5,700 205 11.8

Sweetwater Reservoir near recreation area (SWR04) 08/10/2009 13:30 71.3 21.3

— 10,000 218 10.2

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:20 69.1 28.6 

— 20,300 241 0.53 

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 16:20 64.7 28.8 

— 23,200 297 0.48 

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 08/10/2009 14:00 86.5 27.9

— 20,900 231 8.61

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

10/13/2004 15:30 32.6 17.6 

— 23,200 246 0.22 

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

08/10/2009 14:30 57.2 16.9

— 16,500 146 5.88

Loveland Reservoir near dam (LLR01) 10/14/2004 11:10 81.2 23.4 

— 7,740 150 0.61 

Loveland Reservoir near dam (LLR01) 08/11/2009 11:45 86.9 24.3

— 8,540 119 17.5

Loveland Reservoir east-end near source inlet (LLR02) 10/14/2004 12:00 35.2 18.1 

— 25,800 256 0.25 

Loveland Reservoir east-end near source inlet (LLR02) 08/11/2009 12:00 83.5 27.2

— 7,780 128 11.6

Sweetwater Reservoir atmospheric site at Sweetwater Dam (AIR01) 10/14/2004 14:30 61.7 42.3 

— 17,200 213 0.42 
Summary 79

Table 16. Analytical results for metals in surficial bed-sediment samples, using the U.S. Geological Survey Geologic Division laboratory, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are reported as milligrams per kilogram (mg/kg). Abbreviations: hh:mm, hour:minute; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm) Thorium Titanium Uranium Vanadium Yttrium Zinc [LRL] [0.1] [40] [0.02] [0.2] [0.05] [3]

Sweetwater Reservoir near pump tower (SWR01) 10/13/2004 11:00 2.77 1,160 16.9 450 13.5 54.0 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:45 1,220 0.16 13.5 338 10.7 39.6Sweetwater Reservoir near Vista del Lago station (SWR02) 08/10/2009 13:00 5,840 0.45 3.09 167 32.2 85.7Sweetwater Reservoir center minimum pool (SWR03) 10/13/2004 11:40 12.2 6,400 4.12 198 42.8 122 Sweetwater Reservoir center minimum pool (SWR03) 08/10/2009 13:15 5,570 0.55 3.99 177 35.4 107Sweetwater Reservoir near recreation area (SWR04) 08/10/2009 13:30 5,350 0.52 3.6 156 33.9 93.0Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:20 6.50 7,170 1.39 172 34.0 106 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 16:20 5.08 6,770 1.30 161 32.4 107 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 08/10/2009 14:00 6,840 0.64 1.88 167 32.6 107Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

10/13/2004 15:30 1.98 4,050 0.74 88.2 20.6 55.1 

Sweetwater River at low-flow diversion upstream from 

Sweetwater Reservoir (LFDD)

08/10/2009 14:30 4,850 0.39 2.12 86.6 23.7 104

Loveland Reservoir near dam (LLR01) 10/14/2004 11:10 16.3 5,580 5.63 182 41.2 130 Loveland Reservoir near dam (LLR01) 08/11/2009 11:45 5,730 0.64 6.68 187 38.0 117Loveland Reservoir east-end near source inlet (LLR02) 10/14/2004 12:00 2.16 3,590 0.55 98.1 20.4 53.9 Loveland Reservoir east-end near source inlet (LLR02) 08/11/2009 12:00 6,650 0.63 3.59 196 34.1 132

Sweetwater Reservoir atmospheric site at Sweetwater Dam (AIR01) 10/14/2004 14:30 7.80 9,420 2.18 283 54.1 208 
80 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Results showed methyl tert-butyl ether was present in 

water and air samples until its use was phased out by order of 

the California state government in January 2004. The highest 

concentrations of benzene and toluene in water were detected 

at or near the surface of the reservoir during Phase Two. The 

concentrations of benzene and toluene in air samples were 

highest during the cooler months and tended to have the same 

seasonal pattern over time. Isophorone and phenol were the 

two most frequently detected BNA compounds in water. 

Diuron, prometon, and simazine were the most frequently 

detected pesticide compounds in water. Silver and thallium 

were not detected in unfiltered water samples. Beryllium, 

chromium, and thallium had no detections in filtered water 

samples.

Chloroethane was the only high-volatility volatile 

organic compound detected in air samples. Twenty-eight 

medium/low-volatility volatile organic compounds had no 

detections in air samples. Nineteen polycyclic aromatic 

hydrocarbon compounds were detected in air samples. Ten 

pesticide compounds were detected in air samples. Niobium 

and thallium were the least frequently detected metals in air 

samples.

Seven polycyclic aromatic hydrocarbons and three 

isomers were detected in half the surficial bed-sediment 

samples. Of the 22 organochlorine pesticides analyzed, 6 were 

detected at least once. Of the 37 metals analyzed in surficial 

bed-sediment samples, silver was the only metal not detected.

Three types of quality-control samples were used in 

this study—spikes, blanks, and replicates. Matrix-spike data 

were considered to be adequate if the recovery was within 

30 percent of the expected concentration. Most matrixspike data were within acceptable criteria, but several 

compounds were below the acceptable criteria. The detected 

concentrations for these compounds may be under-reported or 

may not have been detected if present at low concentrations. 

Some matrix spikes were above the acceptable criteria and 

concentrations of those compounds may be overestimated. 

Replicate data are considered to be adequate if within 

30 percent of the environmental sample. 

Matrix-spike recoveries were within the acceptable 

criteria for volatile organic compounds in water samples 

except for carbon disulfide, dichlorodifluoromethane, and 

trichloromethane, which had recoveries more than 30 percent 

different from expected in one-third or more of spike samples. 

High-volatility volatile organic compounds in air samples had 

only one matrix-spike recovery above the acceptable criteria, 

and 21 recoveries were below the acceptable criteria, although 

no recovery was below 59 percent. Medium/low-volatility 

volatile organic compounds in air samples had 5 matrix-spike 

recoveries above the acceptable criteria, and 32 recoveries 

were below the acceptable criteria. The polycyclic aromatic 

hydrocarbons in the air had no recoveries above the acceptable 

criteria, but many recoveries were below the acceptable 

criteria. The recoveries tend to be lower on the glass-fiber 

filters than on the polyurethane foam. Pesticides in air samples 

had a similar pattern as the polycyclic aromatic hydrocarbon 

data for matrix-spike samples; recoveries were lower on 

the glass-fiber filters than on the polyurethane foam. Eight 

compounds had one spike recovery above acceptable criteria 

for Airpest003. About 26 percent of pesticide recoveries were 

below the acceptable criteria. Three standard references for 

metals in surficial bed sediment were analyzed for laboratory 

matrix spikes. All matrix-spike results for reference material 

NIST 2709 were within the acceptable criteria. All matrixspike results for reference materials SO-2 and SO-4 were 

within the upper acceptable criteria except niobium (SO-2 

recovery of 173 percent). Two matrix-spike recoveries for 

reference materials SO-2 and SO-4 were below the lower 

acceptable criteria—antimony and uranium. 

 Field blank data associated with water samples for 

volatile organic compounds had detections for acetone and 

carbon disulfide. Trichloromethane was also detected in a field 

blank, but at a similar concentration to that in an associated 

source solution blank. Four metals (molybdenum, silver, 

thallium, and uranium) were detected in a blank sample at 

site SWR08, but all detections were below the LRLs. Travel, 

lot and laboratory blanks were processed with all the volatile 

organic compound air samples. Acetone, benzene, and toluene 

were detected at low concentrations in most volatile organic 

compound air blanks. Two field blanks collected for polycyclic 

aromatic hydrocarbons in the air had no detections. The 

17 laboratory blanks for polycyclic aromatic hydrocarbons in 

the air had detections, but none were above their laboratory 

reporting level. No blank data were collected for surficial bed 

sediments.

The volatile organic compound replicate data for 

water samples were within acceptable criteria for most 

samples and compounds. Four replicate data sets collected 

for pesticide compounds in water indicate most results are 

within acceptable criteria. Replicate data for metals in water 

samples indicated that 7 of the 19 compounds analyzed had 5 

or fewer replicates outside the acceptable criteria. No highvolatility volatile organic compounds in the air were detected 

in replicate or associated environmental samples. Twentyseven compounds for medium/low volatility VOCs had at 

least one replicate value above the acceptable criteria, and 

twenty-two compounds had at least one replicate value below 

the acceptable criteria. Replicate air samples for semivolatile 

organic compounds and metals were not collected during this 

reporting period. Two replicate data sets were collected for 

polycyclic aromatic hydrocarbons in surficial bed sediment, 

and some compounds had replicate pair comparisons 

outside the acceptable criteria. No detections were found 

in the surficial bed sediment replicate sample collected for 

organochlorine and polychlorinated biphenyl compounds. 

Of the 37 metals analyzed, beryllium had the only replicate 

outside the acceptable criteria.
References Cited 81

References Cited

Alexandrou, Nick, Smith, Murray, Park, Richard, Lumb, 

Kevin, and Brice, Ken, 2001, The extraction of 

polycyclic aromatic hydrocarbons from atmospheric 

particulate matter samples by accelerated solvent 

extraction (ASE): International Journal of Environmental 

Analytical Chemistry, v. 81, no. 4, p. 257–280, 

doi:10.1080/03067310108044248.

Baehr, A.L., Kauffman, L.J., Charles, E.G., Baker, R.J., 

Stackelberg, P.E., Ayers, M.A., and Zapecza, O.S., 1999a, 

Sampling throughout the hydrologic cycle to characterize 

sources of volatile organic compounds in ground water in

Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological 

Survey toxic substances hydrology program—Proceeding 

of the technical meeting, Charleston, South Carolina, March 

8–12, 1999: U.S. Geological Survey Water Resources 

Investigations Report 99–4018C, v. 3, p. 21–36.

Baehr, A.L., Stackelberg, P.E., and Baker, R.J., 1999b, 

Evaluation of the atmosphere as a source of volatile 

organic compounds in shallow groundwater: Water 

Resources Research, v. 35, no. 1, p. 127–136, 

doi:10.1029/1998WR900030.

Bender, D.A., Zogorski, J.S., Luo, Wentai, Pankow, J.F., 

Majewski, M.S., and Baker, R.J., 2000, Atmosphere–water 

interaction of chloroform, toluene, and MTBE in small 

perennial urban streams, in Air & Waste Management 

Association, Annual Conference and Exposition, 93rd, Salt 

Lake City, Utah, June 18–22, 2000 [Proceedings], 11 p.

Bigelow, D.S., 1984, Instruction manual—NADP/NTN site 

selection and installation: Fort Collins, Colo., Colorado 

State University, Natural Resource Ecology laboratory, 

variously paged. 

Briggs, P.H., and Meier, A.L., 2002, The determination of 

forty-two elements in geological material by inductively 

coupled plasma-mass spectrometry, in Taggert, J.E., Jr., ed., 

Analytical methods for chemical analysis of geologic and 

other materials: U.S. Geological Survey Open-File Report 

02–223, chap. I, p. I-1–I-14.

Byard, J.L., 1999, Impact of SR 125 vehicle emissions on the 

Sweetwater Reservoir—Executive summary report: Chula 

Vista, Calif., Sweetwater Authority, 32 p.

California Department of Transportation, 2001, State Route 

125 (From I-905 to State Route 54): District 11 Fact Sheet, 

accessed January 28, 2008, at http://www.dot.ca.gov/dist11/

facts/125spvly.pdf.

California Environmental Protection Agency, 1986, California 

safe drinking water and toxic enforcement act of 1986 

(Proposition 65): Health and Safety Code, chap 6.6, 

Sections 25249.5 through 25249.13.

Connor, B.F., Rose, D.L., Noriega, M.C., Murtaugh, L.K., 

and Abney, S.R., 1998, Methods of analysis by the U.S. 

Geological Survey National Water Quality Laboratory—

Determination of 86 volatile organic compounds in water 

by gas chromatography/mass spectrometry, including 

detections less than reporting limits: U.S. Geological 

Survey Open-File Report 97–829, 78 p.

Fishman, M.J., ed., 1993, Methods of analysis by the U.S. 

Geological Survey National Water Quality Laboratory—

Determination of inorganic and organic constituents in 

water and fluvial sediments: U.S. Geological Survey OpenFile Report 93–125, 217 p.

Foreman, W.T., Connor, B.F., Furlong, E.T., Vaught, 

D.G., and Merten, L.M., 1995, Methods of analysis 

by the U.S. Geological Survey National Water Quality 

Laboratory—Determination of organochlorine pesticides 

and polychlorinated biphenyls in bottom sediment by 

dual capillary-column gas chromatography with electroncapture detection: U.S. Geological Survey Open-File Report 

95–140, 78 p.

Foreman, W.T., Goolsby, D.A., Majewski, M.S., Wiebe, 

F.W., and Battaglin, W.A., 1997, Acetochlor and other 

herbicides in air and rain in the Midwestern United States 

[abs.], in Bridging the global environment—Technology, 

Communication, and Education: Society of Environmental 

Toxicology and Chemistry Annual Meeting, 18th, San 

Francisco, Calif., November 16–20, 1997, no. 229, p. 45.

Foreman, W.T., Majewski, M.S., Goolsby, D.A., Wiebe, F.W., 

and Coupe, R.H., 2000, Pesticides in the atmosphere of the 

Mississippi River Valley, Part II—Air: Science of the Total 

Environment, v. 248, no. 2–3, p. 213–226, http://dx.doi.

org/10.1016/S0048-9697(99)00544-6.

Fram, M.S., Bergamaschi, B.A., and Fujii, Roger, 2001, 

Improving water quality in Sweetwater Reservoir, San 

Diego County, California—Sources and mitigation 

strategies for Trihalomethane (THM)-forming carbon: 

U.S. Geological Survey Fact Sheet 112–01, 4 p., accessed 

January 2007 at http://pubs.usgs.gov/fs/fs-112-01/pdf/

framfs.pdf.

Furlong, E.T., Anderson, B.D., Werner, S.L., Soliven, P.P., 

Coffey, L.J., and Burkhardt, M.R., 2001, Methods of 

analysis by the U.S. Geological Survey National Water 

Quality Laboratory—Determination of pesticides in 

water by graphitized carbon-based solid-phase extraction 

and high-performance liquid chromatography/mass 

spectrometry: U.S. Geological Survey Water-Resources 

Investigations Report 01–4134, 73 p., accessed March 2003 

at http://nwql.usgs.gov/Public/pubs/WRIR01-4134.pdf.
82 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

Garbarino, J.R., 1999, Methods of analysis by the U.S. 

Geological Survey National Water Quality Laboratory—

Determination of dissolved arsenic, boron, lithium, 

selenium, strontium, thallium, and vanadium using 

inductively coupled plasma–mass spectrometry: U.S. 

Geological Survey Open-File Report 99–093, 31 p.

Garbarino, J.R., Kanagy, L.K., and Cree, M.E., 2006, 

Determination of elements in natural-water, biota, sediment, 

and soil samples using collision/reaction cell inductively 

coupled plasma-mass spectrometry: U.S. Geological Survey 

Techniques and Methods, book 5, sec. B, chap. 1, 88 p.

Garbarino, J.R., and Struzeski, T.M., 1998, Methods of 

analysis by the U.S. Geological Survey National Water 

Quality Laboratory—Determination of elements in wholewater digests using inductively coupled plasma-optical 

emission spectrometry and inductively coupled plasmamass spectrometry: U.S. Geological Survey Open-File 

Report 98–165, 101 p.

Garbarino, J.R., and Taylor, H.E., 1996, Inductively coupled 

plasma–mass spectrometric method for the determination of 

dissolved trace elements in natural water: U.S. Geological 

Survey Open-File Report 94–358, 28 p.

Garrison, V.H., Foreman, W.T., Genualdi, S., Griffin, 

D.W., Kellogg, C.A., Majewski, M.S., Mohammed, A., 

Ramsubhag, A., Shinn, E.A., Simonich, S.L., and Smith, 

G.W., 2006, Saharan dust—A carrier of persistent organic 

pollutants, metals and microbes to the Caribbean: Revista 

Biologia Tropical, v. 54 (Suppl. 3), p 9–21.

Lamothe, P.J., Meier, A.L., and Wilson, S.A., 2002, The 

determination of forty-four elements in aqueous samples by 

inductively coupled plasma-mass spectrometry, in Taggart, 

J.E., Jr., ed., Analytical methods for chemical analysis of 

geologic and other materials: U.S. Geological Survey OpenFile Report 02–223-H, p. H1–H11.

Lindley, C.E., Stewart, J.T., and Sandstrom, M.W., 1996, 

Determination of low concentrations of acetochlor in 

water by automated solid-phase extraction and gas 

chromatography with mass-selective detection: Journal 

of the Association of Official Analytical Chemists 

International, v. 79, no. 4, p. 962–966. 

Mackay, Donald, Shiu, W.Y., and Ma, K. C., 1993, 

Illustrated handbook of physical-chemical properties and 

environmental fate for organic chemicals—Volatile organic 

chemicals: CRC Press Inc., Boca Raton, Fla., v. 3, 916 p.

Madsen, J.E., Sandstrom, M.W., and Zaugg, S.D., 2003, 

Methods of analysis by the U.S. Geological Survey 

National Water Quality Laboratory—A method supplement 

for the determination of fipronil and degradates in water by 

gas chromatography/mass spectrometry: U.S. Geological 

Survey Open-File Report 02–462, 11 p., accessed March 

2003 at http://nwql.usgs.gov/Public/pubs/OFR02-462/

OFR02-462.pdf.

Majewski, M.S., Foreman, W.T., Goolsby, D.A., and 

Nakagaki, Naomi, 1998, Airborne pesticide residues 

along the Mississippi River: Environmental Science and 

Technology, v. 32, no. 23, p. 3689–3698.

Majewski, M.S., Sidhu, J.S., and Mendez, G.O., 2002, Waterquality monitoring of Sweetwater and Loveland Reservoirs, 

San Diego County, California–Phase One results, 1998–

1999: U.S. Geological Survey Open-File Report 02–186, 

134 p. 

Maloney, T.J., ed., 2005, Quality management system, U.S. 

Geological Survey National Water Quality Laboratory: U.S. 

Geological Survey Open-File Report 2005–1263, variously 

paged, accessed November 8, 2010, at http://pubs.usgs.gov/

of/2005/1263/.

Mendez, G.O., Foreman, W.T., Morita, Andrew, and 

Majewski, M.S., 2008, Water- and air-quality monitoring 

of the Sweetwater Reservoir watershed, San Diego County, 

California—Phase one results continued, 2001–2003: U.S. 

Geological Survey Data Series Report 347, 158 p.

Mendez, G.O., Foreman, W.T., Sidhu, J.S., and Majewski, 

M.S., 2007, Water- and air-quality monitoring of the 

Sweetwater Reservoir watershed, San Diego County, 

California—Phase One results, continued, 1999–2001: U.S. 

Geological Survey Data Series Report 233, 270 p.

Mueller, D.K., Martin, J.D., and Lopes, T.J., 1997, Qualitycontrol design for surface-water sampling in the National 

Water-Quality Assessment Program: U.S. Geological 

Survey Open-File Report 97–223, 17 p., http://pubs.usgs.

gov/of/1997/223/.

National Institute of Standards and Technology, 1991a, 

Certificate of analysis standard reference material 2709—

San Joaquin Soil: National Institute of Standards and 

Technology.

National Institute of Standards and Technology, 1991b, 

Certificate of analysis standard reference material 

2710—Montana Soil: National Institute of Standards and 

Technology.

Noriega, M.C., Wydoski, D.S., and Foreman, W.T., 2004, 

Methods of analysis by the U.S. Geological Survey 

National Water Quality Laboratory—Determination of 

organophosphate pesticides and polychlorinated biphenyls 

in bottom and suspended sediment by gas chromatography 

with electron-capture detection: U.S. Geological Survey 

Water-Resources Investigations Report 03–4293, 46 p.

Ogden Environmental and Energy Services, 1997, SR 125 

South Route alternatives—Potential air emissions impact on 

Sweetwater Reservoir: San Diego, Calif.
References Cited 83

Olson, M.C., Iverson, J.L., Furlong, E.T., and Schroeder, M.P., 

2004, Methods of analysis by the U.S. Geological Survey 

National Water Quality Laboratory—Determination of 

polycyclic aromatic hydrocarbon compounds in sediment 

by gas chromatography/mass spectrometry: U.S. Geological 

Survey Water-Resources Investigations Report 03–4318, 

45 p. 

Pankow, J.F., Luo, Wentai, Bender, D.A., Isabelle, L.M., 

Hollingsworth, J.S., Chen, C., Asher, W.E., and Zogorski, 

J.S., 2003, Concentrations and co-occurrence correlations 

of 88 volatile organic compounds (VOCs) in the ambient 

air of 13 semi-rural to urban locations in the United States: 

Atmospheric Environment, v. 37, no. 36, p. 5023–5046, 

http://dx.doi.org/10.1016/j.atmosenv.2003.08.006.

Pankow, J.F., Luo, Wentai, Isabelle, L.M., Bender, D.A., 

and Baker, R.J., 1998, Determination of a wide range of 

volatile organic compounds (VOCs) in ambient air using 

multisorbent adsorption thermal desorption (ATD) and gas 

chromatography/mass spectrometry (GC/MS): Analytical 

Chemistry, v. 70, no. 24, p. 5213–5221.

Pirkey, K.D., and Glodt, S.R., 1998, Quality control at the 

U.S. Geological Survey, National Water Quality Laboratory: 

U.S. Geological Survey Fact-Sheet 026–98, 4 p., accessed 

November 12, 2010, at http://pubs.er.usgs.gov/usgspubs/fs/

fs02698.

Potts, P.J., Tindle, A.G., and Webb, Peter, 1992, Geochemical 

reference material compositions—Rocks, minerals, 

sediments, soils, carbonates, refractories, and ores used in 

research and industry: CRC Press Inc., Boca Raton, Fla., 

313 p. 

Sandstrom, M.W., 1995, Filtration of water-sediment 

samples for the determination of organic compounds: U.S. 

Geological Survey Water-Resources Investigations Report 

95–4105, 13 p., accessed March 2003 at http://nwql.usgs.

gov/Public/pubs/WRIR95-4105/WRIR95-4105.pdf.

Sandstrom, M.W., Stroppel, M.E., Foreman, W.T., and 

Schroeder, M.P., 2001, Methods of analysis by the U.S. 

Geological Survey National Water Quality Laboratory—

Determination of moderate-use pesticides and selected 

degradates in water by C-18 solid-phase extraction and 

gas chromatography/mass spectrometry: U.S. Geological 

Survey Water-Resources Investigations Report 01–4098, 

70 p., accessed March 2003 at http://nwql.usgs.gov/Public/

pubs/WRIR/WRIR-01-4098.pdf.

U.S. Environmental Protection Agency, 1999a, Compendium 

of methods for the determination of toxic organic 

compounds in ambient air, second edition, Compendium 

method TO-4A—Determination of pesticides and 

polychlorinated biphenyls in ambient air using high 

volume polyurethane foam (PUF) sampling followed by 

gas chromatography/multi-detector detection (GC/MD): 

Center for Environmental Research Information, Office of 

Research and Development, EPA/625/R-96/010b, 49 p., 

accessed March 2003 at http://www.epa.gov:80/ttnamti1/

files/ambient/airtox/to-4ar2r.pdf.

U.S. Environmental Protection Agency, 1999b, Compendium 

of methods for the determination of toxic organic 

compounds in ambient air, second edition, Compendium 

method TO-13A—Determination of polycyclic 

aromatic hydrocarbons (PAHs) in ambient air using gas 

chromatography/mass spectrometry (GC/MS): Center for 

Environmental Research Information, Office of Research 

and Development, EPA/625/R-96/010b, 78 p., accessed 

March 2003 at http://www.epa.gov/ttn/amtic/files/ambient/

airtox/to-13arr.pdf.

U.S. Geological Survey, variously dated, National field manual 

for the collection of water-quality data: U.S. Geological 

Survey Techniques of Water-Resources Investigations, 

book 9, chaps. A1–A9, accessed February 2, 2011, at http://

water.usgs.gov/owq/FieldManual/.

U.S. Geological Survey, variously dated, USGS Inorganic 

Blind Sample Project—Data quality assessment summaries, 

September 2004 to August 2009: Branch of Quality 

Systems, accessed March 15, 2011, at http://bqs.usgs.gov/

ibsp/qadata.shtml.

Zaugg, S.D., Sandstrom, M.W., Smith, S.G., and Fehlberg, 

K.M., 1995, Methods of analysis by the U.S. Geological 

Survey National Water Quality Laboratory—Determination 

of pesticides in water by C-18 solid-phase extraction and 

capillary-column gas chromatography/mass spectrometry 

with selected-ion monitoring: U.S. Geological Survey 

Open-File Report 95–181, 49 p., http://nwql.usgs.gov/

Public/pubs/OFR95_181.pdf.

Zaugg, S.D., Smith, S.G., Schroeder, M.P., Barber, L.B., and 

Burkhardt, M.R., 2002, Methods of analysis by the U.S. 

Geological Survey National Water Quality Laboratory—

Determination of wastewater compounds by polystyrenedivinylbenzene solid-phase extraction and capillary-column 

gas chromatography/mass spectrometry: U.S. Geological 

Survey Water-Resources Investigations Reports 01–4186, 

37 p., http://nwql.usgs.gov/Public/pubs/WRIR01-4186.html.
84 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of the Sweetwater Reservoir Watershed

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Appendix 85

Appendix

The appendix includes quality-control (QC) tables for the water, air, and surficial bed 

sediment analyzed as part of the data collected for the Sweetwater Reservoir (SWR) project. 

The QC associated with the water sampling is listed in tables A1A–A6C. The QC associated 

with the air sampling is listed in tables B1A–B6C. The QC associated with the bed-sediment 

sampling is listed in tables C1–C3C. Replicate samples for volatile organic compounds (VOCs) 

and metals (targeted compounds) were evaluated by calculating the percentage difference from 

the environmental sample.
86 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Appendix A. Water-Quality Control

At least one field quality-control (QC) sample type 

was collected each time the reservoir was sampled. The 

type of QC sample collected and the sampling location 

were chosen randomly. The matrix-spike QC data for the 

volatile organic compounds (VOCs) in water are given in 

table A1A. The blank and replicate QC data for VOCs are 

given in table A1B. The replicate data are compared to the 

environmental samples in table A1C. In six matrix spikes 

and three matrix-spike recoveries, recoveries were adequate 

for all the VOCs except the following; carbon disulfide and 

dichlorodifluoromethane were below the acceptable criteria 

for about one-third of the samples; and trichloromethane 

were below the acceptable criteria for more than half of 

the samples. Of the VOCs detected in the environmental 

samples, acetone and 2-butanone were detected at estimated 

concentrations below the laboratory reporting level (LRL) 

in one of three field blanks; acetone had 35 detections in 

environmental water samples and 2-butanone had 2 detections. 

Carbon disulfide was detected in three of the four equipment 

blanks at site SWR03 and in some environmental water 

samples. Trichloromethane was detected in one of the three 

field blanks and in a source solution blank collected the same 

day as the field blank sample. No compounds were detected 

in the trip blank at site SWR03. In 14 replicate samples, VOC 

concentrations were within the acceptable criteria (±30 percent 

of environmental sample) except for the following samples; 

trichloromethane at site SWR06 in July 2004; six compounds 

(benzene, ethylbenzene, toluene, 1,2,4-trimethylbenzene, 

m- and p-xylene, and o-xylene) at site SWR06 in July 2006; 

and toluene at site LFDD in October 2006. No replicate 

comparison was calculated if either the environmental or 

replicate compound was not detected.

The matrix-spike and replicate QC data for base 

neutral acid compounds (BNAs) are given in tables A2A

and A2B, respectively. One matrix-spike sample was 

analyzed for BNAs. Two compounds (di-n-butyl phthalate 

and hexachlorobutadiene) in that sample were not within 

the acceptable criteria of ±30 percent. Di-n-butyl phthalate 

was detected in ten water samples and hexachlorobutadiene 

was not detected in any water samples. Concentrations of 

all compounds detected in the three BNA replicate samples 

were estimated and within the acceptable criteria when a 

replicate comparison could be calculated, except for phenol 

in a sample collected from site SWR09 on April 13, 2005. 

The replicate QC data for pesticides (National Water Quality 

Laboratory schedules 2003 and 2060) are given in tables A3

and A4, respectively. Most replicate data for pesticides were 

within the acceptable criteria when a replicate comparison 

could be calculated, except for caffeine for a sample from site 

SWR01 on July 12, 2005. No blanks were processed for BNA 

compounds or pesticides.

No matrix spike or blank samples were processed for 

anthropogenic organic indicator (AOI) compounds. One 

replicate sample was collected for AOI compounds (table A5); 

no AOI compounds were detected in either the environmental 

or replicate sample.

The matrix-spike QC data for metals in unfiltered water 

samples are given in table A6A. Two spikes and one spike 

replicate had recoveries above the acceptable criteria. Metals 

with recoveries above the acceptable criteria (greater than 

30 percent) in three spike and two spike replicates were 

aluminum, chromium, lithium, selenium, and strontium. Most 

matrix-spike replicates are within ±15 percent of spike data. 

The replicate and field blank data for metals in unfiltered water 

samples are given in table A6B. Four metals (molybdenum, 

silver, thallium, and uranium) were detected in blank samples 

at site SWR08, but all detections were below the LRLs. 

Silver was the only metal detected in one additional blank 

at concentrations just above the LRL. During this reporting 

period, 12 replicate samples (table A6C) were collected 

for metals; 7 of the 19 compounds analyzed had 5 or less 

replicates outside the acceptable criteria.

Appendix B. Air Quality Control 

Replicate volatile organic compound (VOC) air samples 

collected for high-volatility (14 replicates) and medium/lowvolatility (11 replicates) are presented in tables B1A and B1B, 

respectively. The VOC replicate air data were compared to 

the environmental air data in table B1C; no high-volatility 

VOCs were detected in replicate or associated environmental 

samples. Twenty-seven compounds for medium/low volatility 

VOCs had at least one replicate value above the acceptable 

criteria, and Twenty-two compounds had at least one replicate 

value below the acceptable criteria. A travel spike was sent 

with about one-third of the VOC air samples and a travel, 

lot, and laboratory blank were associated with each VOC air 

sample collected. For high-volatility VOCs, the travel spike 

and travel, lot, and laboratory blanks are presented in tables 

B2A, B2B, B2C, and B2D, respectively. Thirty-seven spikes 

were analyzed for high-volatility VOCs; chloromethane had 

one spike recovery above the acceptable criteria and several 

spike recoveries below the acceptable criteria. Chloroethene 

and chloroethane also had recoveries below the acceptable 

criteria, althrough no recovery was below 59 percent. No 

high-volatility VOCs were detected in travel, lot, or laboratory 

blanks. For medium/low-volatility VOCs, the travel spike and 

travel, lot, and laboratory blanks are presented in tables B3A, 

B3B, B3C, and B3D, respectively. In 36 travel spikes analyzed 

for 80 medium/low-volatility VOCs, 5 compounds had 

1 recovery above the acceptable criteria, and 17 compounds 

had at least 1 recovery below the acceptable criteria. Of the 

80 medium/low-volatility VOCs, 18 were detected in travel 

and lot blanks, and 17 were detected in laboratory blanks. 

Acetone, benzene, and toluene were detected in most blank 

samples of each type. 
Appendix 87

The associated laboratory reagent spike and laboratory 

blanks quality-control (QC) data for the polycyclic aromatic 

hydrocarbons (PAHs) in air samples are presented in 

tables B4A and B4B, respectively. Seven sets of PAH 

spikes were analyzed for the glass-fiber filter (GFF) and 

polyurethane foam (PUF). Typically, the PUFs had better 

recoveries than the GFFs. PAHs in the air had no recoveries 

above the acceptable criteria, but many recoveries were below 

the acceptable criteria. Of the 17 laboratory PAH samples 

analyzed, 6 compounds had 2 or more detections, although 

most blank detections were an order of magnitude lower 

than the laboratory reporting level (LRL). There were no 

detections in the two PAH field blanks. The laboratory matrixspike and laboratory blank data for pesticides in air samples 

(method Airpest003) are presented in tables B5A and B5B, 

respectively. Eight compounds had one spike recovery above 

acceptable criteria for Airpest003. About 26 percent of spike 

recoveries for Airpest003 were below the acceptable criteria; 

four compounds had at least one spike with no recovery. The 

low spike recoveries may indicate the compound was underdetected and may be reported at lower concentrations than 

occur. Pesticides were not detected in the six blank samples. 

Replicate air samples for semivolatile organic compounds 

(SOCs) were not collected during this reporting period.

Ten laboratory-reagent spike QC samples of standard 

reference materials for metals in air are presented in 

tables B6A. Antimony and bismuth were the only compounds 

with one or more spike recoveries below the acceptable 

criteria. Five compounds (cadmium, chromium, lead, 

lithium, and niobium) had one or more recoveries above the 

acceptable criteria. The spike sample from October 9, 2006, 

to March 14, 2007, was unusable because of equipment 

problems. Results from 10 laboratory blank samples and 

1 field blank for 32 metals are presented in table B6B.

Arsenic, bismuth, thallium, and titanium had no detections 

in the laboratory blank samples. Caesium had detections in 

laboratory blanks below the LRL; all other compounds have 

laboratory blank detections above their LRL. Silver and 

uranium had a higher detections in the field blank than in 

environmental samples. One blank replicate sample for metals 

was analyzed (table B6C), and two compounds are outside the 

acceptable criteria (cobalt and niobium).

Appendix C. Surficial Bed-Sediment Quality 

Control

Replicate data collected for polycyclic aromatic 

hydrocarbons (PAH’s) and organochlorine (OC) and 

polychlorinated biphenyl compounds in surficial bed-sediment 

samples are presented in tables C1 and C2, respectively. One 

replicate sample for PAHs was collected during each of the 

2004 and 2009 sampling periods. Nine compounds were 

detected in the 2004 PAH replicate sample; four compounds 

were detected above 130 percent of the environmental 

sample. Four compound were detected below 70 percent of 

the environmental sample. Eleven compounds were detected 

in the 2009 PAH replicate sample, of which three were 

detected above 130 percent of the environmental sample. 

Six compounds were detected below 70 percent of the 

environmental sample. The one replicate sample collected for 

OCs during the 2009 sampling event had no detections. 

Spike and replicate data collected for metals in surficial 

bed-sediment samples are presented in tables C3A and C3B, 

respectively. All matrix-spike results for reference material 

NIST-2709 were within the acceptable criteria. Matrix-spike 

results for reference materials SO-2 and SO-4 were mostly 

within acceptable criteria except niobium (SO-2 recovery of 

173 percent), antimony (SO-2 and SO-4 recoveries of 52 and 

66 percent, respectively), and uranium (SO-2 recovery of 

69 percent). Quality control replicate comparison of metals are 

listed in table C3C. Of the 36 metals analyzed in a replicate 

sample in 2004, only antimony (130 percent) had a recovery 

above the upper acceptable criteria. Of the 36 metals analyzed 

in the 2009 replicate sample, only beryllium (58.6 percent) 

had a recovery below the acceptable criteria.
88 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Appendix A Tables. 
Appendix 89

Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year]

Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) Acetone Acrylonitrile Benzene Bromo- benzene Bromo- chloromethane Bromodi- chloromethane Bromoethene Bromo- methane 2- Butanone

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 74.7 118 107 103 113 108 99.5 93.6 96.3

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 76.4 118 107 103 111 108 94.1 85.1 98.9

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 115 109 103 107 107 110 105 106 108

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 118 112 112 96.5 99.1 111 105 99.4 118

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 122 121 118 105 100 116 110 103 126

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 123 112 118 101 111 113 110 140 118

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 80.5 79.7 97.9 90.0 90.5 101 121 90.1 76.7

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 102 101 101 98.9 106 98.5 117 123 95.5

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 102 101 101 105 114 98.5 117 111 95.2

Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.
90 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year] Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m)

nButylbenzene sec- Butylbenzene tert- Butylbenzene Carbon disulfide Chloro- benzene Chloro- ethane Chloro- methane 3- Chloropropene 2- Chlorotoluene

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 89.5 95.7 99.5 58.6 103 114 105 122 104

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 94.9 95.7 97.3 59.7 105 114 105 118 104

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 90.3 98.9 103 79.8 103 104 111 110 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 86.7 94.7 104 86.7 98.5 112 110 100 97.9

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 92.3 98.9 108 88.1 103 112 116 103 102

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 97.8 105 118 97.3 101 112 129 106 106

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 100 103 110 84.1 94.4 114 110 106 91.5

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 78.8 91.5 103 65.9 103 93.1 112 139 97.9

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 89.5 100.0 109 73.3 105 104 112 139 97.9
Appendix 91

Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year]

Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) 4- Chlorotoluene Dibromo- chloromethane 1,2- Dibromo-3- chloropropane 1,2- Dibromoethane Dibromo- methane 1,2- Dichlorobenzene 1,3- Dichlorobenzene

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 97.9 104 100 109 106 110 106

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 97.9 104 100 109 113 110 109

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 98.9 105 100 106 109 103 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 94.2 99.7 101 100 106 102 94.1

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 97.8 106 106 106 108 106 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 101 112 108 102 108 106 105

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 91.0 83.3 82.9 85.3 88.8 86.8 89.9

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 95.7 98.9 104 97.9 91.5 89.4 89.4

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 104 98.9 104 100 91.5 97.9 95.7
92 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year] Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) 1,4- Dichlorobenzene trans-1,4- Dichloro-2- butene Dichloro- difluoro- methane 1,1- Dichloroethane 1,2- Dichloroethane 1,1- Dichloroethylene cis-1,2- Dichlororethylene Sweetwater Reservoir near pump tower (SWR01) 04/15/2008 11:37 Spike 0.1 103 113 65.6 110 103 92.6 110 Sweetwater Reservoir near pump tower (SWR01) 04/15/2008 11:38 Spike replicate 0.1 103 110 64.2 106 103 94.7 110 Sweetwater Reservoir center of minimum pool (SWR03) 04/14/2009 12:28 Spike 0.1 96.8 101 89.0 110 103 103 107 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 07/13/2004 14:33 Spike 0.1 91.8 120 71.9 124 112 103 105 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 07/13/2004 14:34 Spike replicate 0.1 98.2 123 74.3 129 112 107 109 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 04/12/2005 14:38 Spike 0.1 100 128 79.0 114 112 94.6 101 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 07/11/2006 12:48 Spike 0.1 85.4 79.1 112 107 95.0 109 96.6 Loveland reservoir near dam (LLR01) 01/10/2007 11:08 Spike 0.1 89.4 94.9 68.4 104 102 90.4 101 Loveland reservoir near dam (LLR01) 01/10/2007 11:09 Spike replicate 0.1 102 99.2 77.7 103 102 86.2 101
Appendix 93

Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year]

Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) trans-1,2- Dichloroethylene Dichloro- methane 1,2- Dichloropropane 1,3- Dichloropropane 2,2- Dichloropropane 1,1- Dichloropropene cis-1,3- Dichloropropene

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 112 104 110 105 83.5 95.7 95.3

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 108 104 105 112 81.4 95.7 96.3

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 103 104 107 105 99.5 95.7 92.1

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 98.3 106 103 106 112 107 87.2

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 103 106 109 115 112 113 94.0

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 111 112 103 106 98.4 107 90.6

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 105 81.9 94.2 84.0 93.4 104 81.8

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 101 83.0 98.9 98.2 96.3 95.7 94.2

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 105 83.0 96.8 105 99.5 100 101
94 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year] Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) trans-1,3- Dichloropropene Diethyl ether Diisopropyl ether Ethylbenzene Ethyl tert-butyl ether Ethyl methacrylate

o-Ethyl 

toluene

Hexachlorobutadiene Hexa- chloroethane

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 95.4 105 103 97.9 95.8 95.2 93.6 76.4 99.7

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 102 111 97.4 97.9 102 98.8 93.6 83.5 94.4

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 96.1 111 107 97.9 104 102 94.7 83.5 94.4

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 99.0 111 110 98.4 108 104 96 81.3 93.0

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 102 124 112 103 116 111 103 81.3 98.6

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 112 118 105 107 97.3 96.1 106 88.9 104

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 80.0 84.5 85.9 103 83.9 84.1 90.4 89.1 99.7

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 97.5 101 105 101 104 95.2 91.5 75.7 99.7

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 97.5 101 99.5 105 97.9 95.2 97.9 82.7 105
Appendix 95

Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year]

Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) Naphthalene tert-Pentyl methyl ether n- Propylbenzene Styrene 1,1,1,2- Tetrachloroethane 1,1,2,2- Tetrachloroethane Tetrachloro- ethylene Tetrachloro- methane

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 129 96.2 na 97.9 113 112 104 104

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 129 96.2 na 97.9 115 110 109 101

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 105 106 na 93.8 106 103 97.9 102

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 97.2 101 91.4 95.6 94.3 107 90.6 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 108 108 93.5 100 101 111 94.8 103

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 108 98.7 102 111 103 111 101 117

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 103 84.9 95.6 85.3 92.0 81.6 107 115

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 107 102 na 100 93.6 93.3 89.4 100

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 109 102 na 102 100 96.8 97.9 103
96 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year] Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) Tetra- hydrofuran 1,2,3,4-Tetra- methylbenzene 1,2,3,5-Tetra- methylbenzene Toluene Tribromo- methane 1,2,3- Trichlorobenzene 1,2,4- Trichlorobenzene 1,1,1- Trichloroethane Sweetwater Reservoir near pump tower (SWR01) 04/15/2008 11:37 Spike 0.1 110 123 126 105 103 112 97.2 101 Sweetwater Reservoir near pump tower (SWR01) 04/15/2008 11:38 Spike replicate 0.1 105 123 126 103 104 112 104 101 Sweetwater Reservoir center of minimum pool (SWR03) 04/14/2009 12:28 Spike 0.1 105 96.5 105 99.0 107 105 97.9 105 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 07/13/2004 14:33 Spike 0.1 115 94.9 109 104 92.1 95.8 85.8 105 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 07/13/2004 14:34 Spike replicate 0.1 120 105 118 109 97.4 104 94.7 109 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 04/12/2005 14:38 Spike 0.1 115 119 122 106 106 104 94.7 113 Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 07/11/2006 12:48 Spike 0.1 78.2 116 124 107 87.9 103 96.5 115 Loveland reservoir near dam (LLR01) 01/10/2007 11:08 Spike 0.1 116 102 104 94.8 102 104 89.4 97.9 Loveland reservoir near dam (LLR01) 01/10/2007 11:09 Spike replicate 0.1 121 109 111 96.9 103 111 104 100
Appendix 97

Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year]

Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) 1,1,2-Tri- chloroethane Trichloro- ethylene Trichloro- fluoromethane Trichloro- methane (chloroform) 1,2,3- Trichloropropane

1,1,2-

trichlorotrifluoroethane 

(freon 113) 

 1,2,3-Trimethylbenzene 1,2,4-Tri- methylbenzene

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 112 101 94.7 53.4 103 91.5 114 104

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 112 103 89.4 52.4 106 89.4 114 104

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 105 110 106 51.5 109 102 103 93.8

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 104 98.0 107 111 102 93.7 105 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 111 104 109 115 107 98.0 105 108

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 108 102 111 117 109 109 114 115

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 89.4 111 123 105 81.2 104 92.4 98.8

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 102 96.8 87.2 45.9 95.7 70.2 103 100

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 95.7 96.8 94.7 46.9 102 80.9 103 108
98 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1A. Quality-control matrix spike results for volatile organic compounds (VOCs) in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; m, meter; mm/dd/yyyy, month/day/year] Site name Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) 1,3,5- Trimethylbenzene Vinyl chloride

m- and 

pXylene

oXylene

1,4-

Bromofluorobenzene, 

surrogate 

(percent)

(99834)

1,2-

Dichloroethaned4, 

surrogate 

(percent) 

(99832)

Toluened8, 

surrogate 

(percent) 

(99833)

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:37 Spike 0.1 97.9 104 97.9 95.7 88.8 97.2 98.4

Sweetwater Reservoir near 

pump tower (SWR01)

04/15/2008 11:38 Spike 

replicate

0.1 95.8 104 99.0 95.7 91.7 95.4 100

Sweetwater Reservoir 

center of minimum pool (SWR03)

04/14/2009 12:28 Spike 0.1 95.8 104 94.8 100 103 104 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:33 Spike 0.1 95.5 114 95.5 102 97.3 105 101

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/13/2004 14:34 Spike 

replicate

0.1 102 114 101 109 98.4 107 99.9

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

04/12/2005 14:38 Spike 0.1 110 124 110 104 93.8 104 103

Sweetwater Reservoir 

east-end reservoir-fill boundary (SWR06)

07/11/2006 12:48 Spike 0.1 97.7 115 102 97.0 93.8 95.9 101

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:08 Spike 0.1 95.8 93.6 99.0 100 98.8 95.5 97.7

Loveland reservoir near 

dam (LLR01)

01/10/2007 11:09 Spike 

replicate

0.1 104 104 104 104 100 95.8 96.7
Appendix 99

Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sample 

type

Sample 

depth 

(m)

Acetone 

(81552)

Acrylonitrile 

(34215)

Benzene 

(34030)

Bromobenzene 

(81555)

Bromochloromethane 

(77297)

Bromodichloromethane 

(32101)

Bromoethene 

(50002)

Bromomethane 

(34413)

2-

Butanone 

(81595)

nButylbenzene 

(77342)

[LRL] [6] [0.8,1] [0.02] [0.03] [0.12] [0.03] [0.1] [0.3] [2.0] [0.1]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0 — — — — — — — — — —10/09/2007 11:48 Equipment 

blank

none — — — — — — — — — —

04/16/2008 09:48 Field blank none E1 — — — — — — — E0.5 —10/14/2008 12:28 Field blank none — — — — — — — — — —

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none — — — — — — — — — —

01/12/2005 12:18 Equipment 

blank

none — — — — — — — — — —

10/11/2005 11:31 Replicate 6.0 — — — — — — — — — —

01/10/2006 12:08 Equipment 

blank

none — — — — — — — — — —

01/10/2006 12:18 Trip blank none — — — — — — — — — —04/14/2009 12:21 Replicate 0.1 — — — — — 0.31 — — — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2 — — — — — 0.10 — — — —04/13/2004 12:41 Replicate 1.0 — — — — — 0.17 — — — —07/13/2004 14:31 Replicate 0.1 — — — — — — — — — —04/12/2005 14:31 Replicate 2.0 E2 — — — — E0.03 — — — —04/07/2006 12:21 Replicate 0.1 E1 — — — — — — — — —

07/11/2006 12:41 Replicate 2.0 — — E0.03 — — — — — — —

01/08/2008 11:51 Replicate 0.1 — — — — — — — — — —

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none — — — — — 0.89 — — — —

07/10/2007 13:11 Replicate none 13 — — — — 1.9 — — — —07/07/2009 14:08 Field blank none — — — — — — — — — —

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1 — — — — — — — — — —

01/14/2009 12:41 Replicate 0.1 — — — — — — — — — —

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none — — — — — — — — — —
100 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) sec- Butylbenzene (77350) tert- Butylbenzene (77353) Carbon disulfide (77041) Chlorobenzene (34301) Chloroethane (34311) Chloromethane (34418) 3- Chloropropene (78109) 2- Chlorotoluene (77275) 4- Chlorotoluene (77277) [LRL] [0.06] [0.06] [0.04] [0.03] [0.1] [0.2] [0.50] [0.04] [0.05] Sweetwater Reservoir near pump tower (SWR01) 07/12/2005 11:01 Replicate 2.0

—

—

—

—

—

—

—

—

—

10/09/2007 11:48 Equipment 

blank

none

—

—

—

—

—

—

—

—

—

04/16/2008 09:48 Field blank none

—

—

—

—

—

—

—

—

—

10/14/2008 12:28 Field blank none

—

—

—

—

—

—

—

—

—

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none

—

— 0.16

—

—

—

—

—

—

01/12/2005 12:18 Equipment 

blank

none

—

— 0.08

—

—

—

—

—

—

10/11/2005 11:31 Replicate 6.0

—

—

—

—

—

—

—

—

—

01/10/2006 12:08 Equipment 

blank

none

—

— E0.03

—

—

—

—

—

—

01/10/2006 12:18 Trip blank none

—

—

—

—

—

—

—

—

—

04/14/2009 12:21 Replicate 0.1

—

—

—

—

—

—

—

—

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2

—

—

—

—

—

—

—

—

—

04/13/2004 12:41 Replicate 1.0

—

—

—

—

—

—

—

—

—

07/13/2004 14:31 Replicate 0.1

—

—

—

—

—

—

—

—

—

04/12/2005 14:31 Replicate 2.0

—

— E0.03

—

—

—

—

—

—

04/07/2006 12:21 Replicate 0.1

—

—

—

—

—

—

—

—

—

07/11/2006 12:41 Replicate 2.0

—

—

—

—

—

—

—

—

—

01/08/2008 11:51 Replicate 0.1

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none

—

—

—

—

—

—

—

—

—

07/10/2007 13:11 Replicate none

—

—

—

—

— E0.3

—

—

—

07/07/2009 14:08 Field blank none

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1

—

— 0.04

—

—

—

—

—

—

01/14/2009 12:41 Replicate 0.1

—

— E0.02

—

—

—

—

—

—

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none

—

—

—

—

—

—

—

—

—
Appendix 101

Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sample 

type

Sample 

depth 

(m)

Dibromochloromethane 

(32105)

1,2-Dibromo3-chloropropane 

(82625)

1,2-

Dibromoethane 

(77651)

Dibromomethane 

(30217)

1,2-

Dichlorobenzene 

(34536)

1,3-

Dichlorobenzene 

(34566)

1,4-

Dichlorobenzene 

(34571)

[LRL] [0.1] [0.5] [0.04] [0.05] [0.05] [0.03] [0.03]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0 — — — — — — —10/09/2007 11:48 Equipment 

blank

none — — — — — — —

04/16/2008 09:48 Field blank none — — — — — — —10/14/2008 12:28 Field blank none — — — — — — —

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none — — — — — — —

01/12/2005 12:18 Equipment 

blank

none — — — — — — —

10/11/2005 11:31 Replicate 6.0 — — — — — — —

01/10/2006 12:08 Equipment 

blank

none — — — — — — —

01/10/2006 12:18 Trip blank none — — — — — — —04/14/2009 12:21 Replicate 0.1 0.4 — — — — — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2 0.1 — — — — — —04/13/2004 12:41 Replicate 1.0 0.1 — — — — — —07/13/2004 14:31 Replicate 0.1 — — — — — — —04/12/2005 14:31 Replicate 2.0 — — — — — — —04/07/2006 12:21 Replicate 0.1 — — — — — — —

07/11/2006 12:41 Replicate 2.0 — — — — — — —

01/08/2008 11:51 Replicate 0.1 — — — — — — —

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none 0.6 — — — — — —

07/10/2007 13:11 Replicate none 2.2 — — — — — —07/07/2009 14:08 Field blank none — — — — — — —

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1 — — — — — — —

01/14/2009 12:41 Replicate 0.1 — — — — — — —

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none — — — — — — —
102 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) trans-1,4- Dichloro-2-butene (73547) Dichlorodifluoromethane (34668) 1,1- Dichloroethane (34496) 1,2- Dichloroethane (32103) 1,1- Dichloroethylene (34501) cis-1,2- Dichlororethylene (77093) trans-1,2- Dichloroethylene (34546) Dichloromethane (34423) [LRL] [0.7] [0.18] [0.04] [0.1] [0.02] [0.02] [0.03] [0.1] Sweetwater Reservoir near pump tower (SWR01) 07/12/2005 11:01 Replicate 2.0

—

—

—

—

—

—

—

—

10/09/2007 11:48 Equipment 

blank

none

—

—

—

—

—

—

—

—

04/16/2008 09:48 Field blank none

—

—

—

—

—

—

—

—

10/14/2008 12:28 Field blank none

—

—

—

—

—

—

—

—

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none

—

—

—

—

—

—

—

—

01/12/2005 12:18 Equipment 

blank

none

—

—

—

—

—

—

—

—

10/11/2005 11:31 Replicate 6.0

—

—

—

—

—

—

—

—

01/10/2006 12:08 Equipment 

blank

none

—

—

—

—

—

—

—

—

01/10/2006 12:18 Trip blank none

—

—

—

—

—

—

—

—

04/14/2009 12:21 Replicate 0.1

—

—

—

—

—

—

—

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2

—

—

—

—

—

—

—

—

04/13/2004 12:41 Replicate 1.0

—

—

—

—

—

—

—

—

07/13/2004 14:31 Replicate 0.1

—

—

—

—

—

—

—

—

04/12/2005 14:31 Replicate 2.0

—

—

—

—

—

—

—

—

04/07/2006 12:21 Replicate 0.1

—

—

—

—

—

—

—

—

07/11/2006 12:41 Replicate 2.0

—

—

—

—

—

—

—

—

01/08/2008 11:51 Replicate 0.1

—

—

—

—

—

—

—

—

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none

—

—

—

—

—

—

—

—

07/10/2007 13:11 Replicate none

—

—

—

—

—

—

— 0.1

07/07/2009 14:08 Field blank none

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1

—

—

—

—

— E0.02

—

—

01/14/2009 12:41 Replicate 0.1

— E0.05

—

—

— 0.03

— E0.01

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none

—

—

—

—

—

—

—

—
Appendix 103

Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sample 

type

Sample 

depth 

(m)

1,2-

Dichloropropane 

(34541)

1,3-

Dichloropropane 

(77173)

2,2-

Dichloropropane 

(77170)

1,1-

Dichloropropene 

(77168)

cis-1,3-

Dichloropropene 

(34704)

trans-1,3-

Dichloropropene 

(34699)

Diethyl 

ether 

(81576)

Diisopropyl 

ether 

(81577)

Ethylbenzene 

(34371)

[LRL] [0.03] [0.1] [0.05] [0.03] [0.05] [0.09] [0.1] [0.10] [0.03]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0 — — — — — — — — —

10/09/2007 11:48 Equipment 

blank

none — — — — — — — — —

04/16/2008 09:48 Field blank none — — — — — — — — —10/14/2008 12:28 Field blank none — — — — — — — — —

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none — — — — — — — — —

01/12/2005 12:18 Equipment 

blank

none — — — — — — — — —

10/11/2005 11:31 Replicate 6.0 — — — — — — — — —

01/10/2006 12:08 Equipment 

blank

none — — — — — — — — —

01/10/2006 12:18 Trip blank none — — — — — — — — —04/14/2009 12:21 Replicate 0.1 — — — — — — — — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2 — — — — — — — — —

04/13/2004 12:41 Replicate 1.0 — — — — — — — — —07/13/2004 14:31 Replicate 0.1 — — — — — — — — —04/12/2005 14:31 Replicate 2.0 — — — — — — — — —04/07/2006 12:21 Replicate 0.1 — — — — — — — — —

07/11/2006 12:41 Replicate 2.0 — — — — — — — — 0.04

01/08/2008 11:51 Replicate 0.1 — — — — — — — — —

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none — — — — — — — — —

07/10/2007 13:11 Replicate none — — — — — — — — —07/07/2009 14:08 Field blank none — — — — — — — — —

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1 — — — — — — — — —

01/14/2009 12:41 Replicate 0.1 — — — — — — — — —

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none — — — — — — — — —
104 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) Ethyl tert- butyl ether (50004) Ethyl methacrylate (73570)

o-Ethyl 

toluene 

(77220)

Hexachlorobutadiene 

(39702)

Hexachloroethane 

(34396)

2-

Hexanone 

(77103)

Isopropylbenzene 

(77223)

4-Isopropyl1-methylbenzene 

(77356)

Methyl 

acrylate 

(49991)

Methyl 

acrylonitrile 

(81593)

[LRL] [0.03] [0.2] [0.06] [0.1] [0.1] [0.4] [0.04] [0.8] [1.0] [0.4]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0

—

—

—

—

—

—

—

—

—

—

10/09/2007 11:48 Equipment 

blank

none

—

—

—

—

—

—

—

—

—

—

04/16/2008 09:48 Field blank none

—

—

—

—

—

—

—

—

—

—

10/14/2008 12:28 Field blank none

—

—

—

—

—

—

—

—

—

—

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none

—

—

—

—

—

—

—

—

—

—

01/12/2005 12:18 Equipment 

blank

none

—

—

—

—

—

—

—

—

—

—

10/11/2005 11:31 Replicate 6.0

—

—

—

—

—

—

—

—

—

—

01/10/2006 12:08 Equipment 

blank

none

—

—

—

—

—

—

—

—

—

—

01/10/2006 12:18 Trip blank none

—

—

—

—

—

—

—

—

—

—

04/14/2009 12:21 Replicate 0.1

—

—

—

—

—

—

—

—

—

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2

—

—

—

—

—

—

—

—

—

—

04/13/2004 12:41 Replicate 1.0

—

—

—

—

—

—

—

—

—

—

07/13/2004 14:31 Replicate 0.1

—

—

—

—

—

—

—

—

—

—

04/12/2005 14:31 Replicate 2.0

—

—

—

—

—

—

—

—

—

—

04/07/2006 12:21 Replicate 0.1

—

—

—

—

—

—

—

—

—

—

07/11/2006 12:41 Replicate 2.0

—

— E0.02

—

—

—

—

—

—

—

01/08/2008 11:51 Replicate 0.1

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none

—

—

—

—

—

—

—

—

—

—

07/10/2007 13:11 Replicate none

—

—

—

—

—

—

—

—

—

—

07/07/2009 14:08 Field blank none

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1

—

—

—

—

—

—

—

—

—

—

01/14/2009 12:41 Replicate 0.1

—

—

—

—

—

—

—

—

—

—

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none

—

—

—

—

—

—

—

—

—

—
Appendix 105

Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sample 

type

Sample 

depth 

(m)

Methyl 

iodide 

(77424)

Methyl 

methacrylate 

(81597)

4-Methyl2-pentanone 

(78133)

Methyl tertbutyl ether 

(MTBE) 

(78032)

Naphthalene 

(34696)

tert-Pentyl 

methyl ether 

(50005)

nPropylbenzene 

(77224)

Styrene 

(77128)

1,1,1,2-

Tetrachloroethane 

(77562)

1,1,2,2-

Tetrachloroethane 

(34516)

[LRL] [0.50] [0.2] [0.4] [0.1] [0.5] [0.04] [0.04] [0.04] [0.03] [0.08]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0 — — — — — — — — — —

10/09/2007 11:48 Equipment 

blank

none — — — — — — NA — — —

04/16/2008 09:48 Field blank none — — — — — — NA — — —10/14/2008 12:28 Field blank none — — — — — — NA — — —

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none — — — — — — — — — —

01/12/2005 12:18 Equipment 

blank

none — — — — — — — — — —

10/11/2005 11:31 Replicate 6.0 — — — — — — — — — —

01/10/2006 12:08 Equipment 

blank

none — — — — — — — — — —

01/10/2006 12:18 Trip blank none — — — — — — — — — —04/14/2009 12:21 Replicate 0.1 — — — — — — — — — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2 — — — — — — — — — —

04/13/2004 12:41 Replicate 1.0 — — — — — — — — — —07/13/2004 14:31 Replicate 0.1 — — — — — — — — — —04/12/2005 14:31 Replicate 2.0 — — — — — — — — — —04/07/2006 12:21 Replicate 0.1 — — — — — — — — — —

07/11/2006 12:41 Replicate 2.0 — — — — — — — — — —

01/08/2008 11:51 Replicate 0.1 — — — — — — — — — —

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none — — — — — — NA — — —

07/10/2007 13:11 Replicate none — — — — — — NA — — —07/07/2009 14:08 Field blank none — — — — — — NA — — —

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1 — — — — — — NA — — —

01/14/2009 12:41 Replicate 0.1 — — — 0.19 — — NA E0.02 — —

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none — — — — — — NA — — —
106 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) Tetrachloroethylene (34475) Tetrachloromethane (32102) Tetrahydrofuran (81607) 1,2,3,4- Tetramethylbenzene (49999) 1,2,3,5- Tetramethylbenzene (50000) Toluene (34010) Tribromomethane (32104) [LRL] [0.03] [0.06] [1] [0.1] [0.1] [0.02, 0.05] [0.1] Sweetwater Reservoir near pump tower (SWR01) 07/12/2005 11:01 Replicate 2.0

—

—

—

—

—

—

—

10/09/2007 11:48 Equipment 

blank

none

—

—

—

—

—

—

—

04/16/2008 09:48 Field blank none

—

—

—

—

—

—

—

10/14/2008 12:28 Field blank none

—

—

—

—

—

—

—

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none

—

—

—

—

—

—

—

01/12/2005 12:18 Equipment 

blank

none

—

—

—

—

—

—

—

10/11/2005 11:31 Replicate 6.0

—

—

—

—

—

—

—

01/10/2006 12:08 Equipment 

blank

none

—

—

—

—

—

—

—

01/10/2006 12:18 Trip blank none

—

—

—

—

—

—

—

04/14/2009 12:21 Replicate 0.1

—

—

—

—

—

— 0.23

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2

—

—

—

—

—

—

—

04/13/2004 12:41 Replicate 1.0

—

—

—

—

— E0.01

—

07/13/2004 14:31 Replicate 0.1

—

—

—

—

— E0.01

—

04/12/2005 14:31 Replicate 2.0

—

—

—

—

—

—

—

04/07/2006 12:21 Replicate 0.1

—

—

—

—

— E0.01

—

07/11/2006 12:41 Replicate 2.0

—

—

—

—

— 0.22

—

01/08/2008 11:51 Replicate 0.1

—

—

—

—

—

—

—

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none

—

—

—

—

—

— 0.23

07/10/2007 13:11 Replicate none

— 0.07

—

—

—

— 0.51

07/07/2009 14:08 Field blank none

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1

—

—

—

—

— E0.02

—

01/14/2009 12:41 Replicate 0.1

—

—

—

—

—

—

—

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none

—

—

—

—

—

—

—
Appendix 107

Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Time

(hh:mm)

Sample 

type

Sample 

depth 

(m)

1,2,3-

Trichlorobenzene 

(77613)

1,2,4-

Trichlorobenzene 

(34551)

1,1,1-

Trichloroethane 

(34506)

1,1,2-

Trichloroethane 

(34511)

Trichloroethylene 

(39180)

Trichlorofluoromethane 

(34488)

Trichloromethane 

(32106)

1,2,3-

Trichloropropane 

(77443)

1,1.2-Trichlorotrifluoroethane 

(Freon 113) 

(77652)

[LRL] [0.2] [0.1] [0.03] [0.04, 0.06] [0.04] [0.08] [0.02] [0.18] [0.04]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0 — — — — — — 0.04 — —10/09/2007 11:48 Equipment 

blank

none — — — — — — — — —

04/16/2008 09:48 Field blank none — — — — — — — — —10/14/2008 12:28 Field blank none — — — — — — — — —

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none — — — — — — — — —

01/12/2005 12:18 Equipment 

blank

none — — — — — — — — —

10/11/2005 11:31 Replicate 6.0 — — — — — — 0.05 — —

01/10/2006 12:08 Equipment 

blank

none — — — — — — — — —

01/10/2006 12:18 Trip blank none — — — — — — — — —04/14/2009 12:21 Replicate 0.1 — — — — — — 0.25 — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2 — — — — — — 0.11 — —04/13/2004 12:41 Replicate 1.0 — — — — — — 0.16 — —07/13/2004 14:31 Replicate 0.1 — — — — — — 0.03 — —04/12/2005 14:31 Replicate 2.0 — — — — — — 0.03 — —04/07/2006 12:21 Replicate 0.1 — — — — — — E0.02 — —

07/11/2006 12:41 Replicate 2.0 — — — — — — E0.01 — —

01/08/2008 11:51 Replicate 0.1 — — — — — — 0.03 — —

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none — — — — — — 1.05 — —

07/10/2007 13:11 Replicate none — — — — — — 2.63 — —07/07/2009 14:08 Field blank none — — — — — — 0.33 — —

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1 — — — — E0.03 — — — —

01/14/2009 12:41 Replicate 0.1 — — — — 0.05 — — — —

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none — — — — — — 0.29 — —
108 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1B. Quality-control field blank and field replicate results for volatile organic compound (VOC) concentrations in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; m, meters; mm/dd/yyyy, month/day/year; NA, not analyzed; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sample type Sample depth (m) 1,2,3- Trimethylbenzene (77221) 1,2,4- Trimethylbenzene (77222) 1,3,5- Trimethylbenzene (77226) Vinyl Chloride (39175)

m- and pXylene 

(85795)

o-Xylene 

(77135)

1,4-

Bromofluorobenzene, 

surrogate 

(percent)

(99834)

1,2-

Dichloroethane-d4, 

surrogate 

(percent) 

(99832)

Toluene-d8, 

surrogate 

(percent)

(99833)

[LRL] [0.1] [0.06] [0.04] [0.1] [0.06] [0.04]

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 11:01 Replicate 2.0

—

—

—

—

—

— 93.0 98.8 100

10/09/2007 11:48 Equipment 

blank

none

—

—

—

—

—

— 85.2 112 98.5

04/16/2008 09:48 Field blank none

—

—

—

—

—

— 84.4 103 95.8

10/14/2008 12:28 Field blank none

—

—

—

—

—

— 79.5 138 91.8

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:08 Equipment 

blank

none

—

—

—

—

—

— 82.2 120 99.9

01/12/2005 12:18 Equipment 

blank

none

—

—

—

—

—

— 113 106 100

10/11/2005 11:31 Replicate 6.0

—

—

—

—

—

— 112 101 104

01/10/2006 12:08 Equipment 

blank

none

—

—

—

—

—

— 99.5 99.4 98.3

01/10/2006 12:18 Trip blank none

—

—

—

—

—

— 94.1 96.8 96.8

04/14/2009 12:21 Replicate 0.1

—

—

—

—

—

— 93.0 107 96.8

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 15:01 Replicate 0.2

—

—

—

—

—

— 101 126 102

04/13/2004 12:41 Replicate 1.0

—

—

—

—

—

— 90.8 102 99.0

07/13/2004 14:31 Replicate 0.1

—

—

—

—

—

— 109 138 103

04/12/2005 14:31 Replicate 2.0

—

—

—

—

—

— 111 99.5 104

04/07/2006 12:21 Replicate 0.1

—

—

—

—

—

— 75.2 124 95.4

07/11/2006 12:41 Replicate 2.0

— 0.08 E0.03

— 0.20 0.07 105 106 101

01/08/2008 11:51 Replicate 0.1

—

—

—

—

—

— 75.3 121 94.4

Perdue Treatment Plant-finished water at SWR (SWR08)

04/11/2007 08:41 Replicate none

—

—

—

—

—

— 69.1 110 94.7

07/10/2007 13:11 Replicate none

—

—

—

—

—

— 72.3 138 93.7

07/07/2009 14:08 Field blank none

—

—

—

—

—

— 82.0 147 94.8

Sweetwater River at low-flow diversion dam upstream from SWR (LFDD)

10/11/2006 13:11 Replicate 0.1

—

—

—

—

—

— 82.3 119 96.9

01/14/2009 12:41 Replicate 0.1

—

—

—

—

—

— 66.0 134 97.1

Quality-control site (QA/QC)

07/07/2009 14:30 Source 

solution blank

none

—

—

—

—

—

— 82.2 144 92.6
Appendix 109

Table A1C. Quality-control replicate comparison for volatile organic compound (VOC) detected in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.[See table 1 for site-identification number. Values are given in percentage of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: m, meter; mm/dd/yyyy, month/day/year; na, not applicable; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Sample 

depth 

(m)

Acetone Benzene Bromobenzene Bromochloromethane Bromodichloromethane 2- Butanone Carbon disulfide Chlorobenzene Chloroethane Chloromethane

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 2.0 — — — — — — — — — —

Sweetwater Reservoir center of minimum pool (SWR03)

10/11/2005 6.0 — — — — — — — — — —

04/14/2009 0.1 — — — — 103 — — — — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 0.2 — — — — 90.9 — — — — —04/13/2004 1.0 — — — — 100 — nr — — —07/13/2004 0.1 — — — — — — — — — —04/12/2005 2.0 107 — — — 107 — 125 — — —04/07/2006 0.1 100 — — — — — — — — —

07/11/2006 2.0 — 150 — — — — — — — —

01/08/2008 0.1 — — — — — — — — — —

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

04/11/2007 na — — — — 97.2 — — — — —

07/10/2007 na 97.0 — — — 107 — nr — — 101

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/11/2006 0.1 — — — — — — 111 — — —

01/14/2009 0.1 — — — — — — nr — — —
110 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1C. Quality-control replicate comparison for volatile organic compound (VOC) detected in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Values are given in percentage of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: m, meter; mm/dd/yyyy, month/day/year; na, not applicable; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Sample depth (m) Dibromochloro- methane Dibromo- methane 1,2- Dichlorobenzene 1,4- Dichlorobenzene Dichlorodifluoro- methane cis-1,2- Dichlororethylene Dichloromethane Diethyl ether Ethylbenzene o-Ethyl toluene Sweetwater Reservoir near pump tower (SWR01) 07/12/2005 2.0

—

—

—

—

—

—

—

—

—

—

Sweetwater Reservoir center of minimum pool (SWR03)

10/11/2005 6.0

—

—

—

—

—

—

—

—

—

—

04/14/2009 0.1 97.6

—

—

—

—

—

—

—

—

—

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 0.2 100

—

—

—

—

—

—

—

—

—

04/13/2004 1.0 76.9

—

—

—

—

—

—

—

—

—

07/13/2004 0.1

—

—

—

—

—

—

—

—

—

—

04/12/2005 2.0

—

—

—

—

—

—

—

—

—

—

04/07/2006 0.1

—

—

—

—

—

—

—

—

—

—

07/11/2006 2.0

—

—

—

—

—

—

—

— 148 nr

01/08/2008 0.1

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

04/11/2007 na 89.8

—

—

—

—

—

—

—

—

—

07/10/2007 na 115

—

—

—

—

— 116

—

—

—

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/11/2006 0.1

—

—

—

—

— 100

—

—

—

—

01/14/2009 0.1

—

—

—

— 92.6 111 83.3

—

—

—
Appendix 111

Table A1C. Quality-control replicate comparison for volatile organic compound (VOC) detected in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Values are given in percentage of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: m, meter; mm/dd/yyyy, month/day/year; na, not applicable; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

Sample 

depth 

(m)

4-Isopropyl1-methylbenzene Methyl iodide Methyl tert- butyl ether (MTBE) Styrene Tetrachloro- methane Tetrahydrofuran Toluene Tribromomethane 1,1,1- Trichloroethane Trichloroethylene

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 2.0 — — — — — — — — — —

Sweetwater Reservoir center of minimum pool (SWR03)

10/11/2005 6.0 — — — — — — — — — —

04/14/2009 0.1 — — — — — — — 95.8 — —

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 0.2 — — — — — — — — — —04/13/2004 1.0 — — — — — — 100 — — —07/13/2004 0.1 — — — — — — 90.9 — — —04/12/2005 2.0 — — — — — — — — — —04/07/2006 0.1 — — — — — — 90.9 — — —

07/11/2006 2.0 — — — — — — 149 — — —

01/08/2008 0.1 — — — — — — — — — —

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

04/11/2007 na — — — — — — — 103 — —

07/10/2007 na — — — — nr — — 105 — —

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/11/2006 0.1 — — — — — — 133 — — 120

01/14/2009 0.1 — — 106 105 — — — — — 106
112 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A1C. Quality-control replicate comparison for volatile organic compound (VOC) detected in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2020, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Values are given in percentage of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: m, meter; mm/dd/yyyy, month/day/year; na, not applicable; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Sample depth (m) Trichlorofluoro- methane Trichloro- methane 1,2,3- Trimethylbenzene 1,2,4- Trimethylbenzene 1,3,5- Trimethylbenzene

m- and 

pXylene

oXylene

1,4-

Bromofluorobenzene, 

surrogate

(percent)

1,2-

Dichloroethaned4, 

surrogate

(percent)

Toluened8, 

surrogate

(percent)

Sweetwater Reservoir near pump tower (SWR01)

07/12/2005 2.0

— 95.2

—

—

—

—

— 104 104 102

Sweetwater Reservoir center of minimum pool (SWR03)

10/11/2005 6.0

— 111

—

—

—

—

— 97.4 99.0 97.2

04/14/2009 0.1

— 104

—

—

—

—

— 101 98.2 100

Sweetwater Reservoir east-end reservoir-fill boundary (SWR06)

10/14/2003 0.2

— 92.7

—

—

—

—

— 108 94.7 100

04/13/2004 1.0

— 98.0

—

—

—

—

— 99.3 99.0 100

07/13/2004 0.1

— 143

—

—

—

—

— 103 101 101

04/12/2005 2.0

— 93.8

—

—

—

—

— 102 100 99.0

04/07/2006 0.1

— 87.0

—

—

—

—

— 98.4 99.2 101

07/11/2006 2.0

— nr

— 174 nr 160 159 104 104 101

01/08/2008 0.1

— 96.8 98.2 104 103

Perdue Treatment Plant—finished water at Sweetwater Reservoir (SWR08)

04/11/2007 na

— 101

—

—

—

—

— 102 92.4 100

07/10/2007 na

— 109

—

—

—

—

— 98.4 101 106

Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

10/11/2006 0.1

—

—

—

—

—

—

— 98.0 99.2 100

01/14/2009 0.1

—

—

—

—

—

—

— 98.5 98.5 100
Appendix 113

Table A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir watershed, San Diego County, California.[The site-identification number is 324137117002901. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir]

Station number Date (mm/dd/yyyy) Time (hh:mm) Acenaphthene Acenaphthylene Anthracene Benzo[a] anthracene Benzo[a] pyrene Benzo[b] fluoranthene Benzo[ghi] perylene Benzo[k] fluoranthene Benzyl n-butyl phthalate 4- Bromophenyl phenyl ether

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

04/14/2004 12:28 109 99.3 119 109 99.2 109 98.4 109 96.9 119

Table A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[The site-identification number is 324137117002901. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir]

Station number Date (mm/dd/yyyy) Time (hh:mm) bis(2-Chlo- roethoxy) methane bis(2-Chloro- ethyl) ether bis(2-Chlo- roisopropyl) ether 4-Chloro- 3-methylphenol 2- Chloronaph- thalene 2- Chlorophenol 4- Chlorophenyl phenyl ether Chrysene bis(2- Ethylhexyl) phthalate Dibenzo[a,h] anthracene

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

04/14/2004 12:28 109 119 119 109 109 119 99.2 109 97.4 98.3

Table A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[The site-identification number is 324137117002901. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir]

Station number Date (mm/dd/yyyy) Time (hh:mm) 1,2- Dichloro- benzene 1,3- Dichloro- benzene 1,4- Dichloro- benzene 2,4- Dichloro- phenol Diethyl phthalate 2,4- Dimethylphenol Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate 2,4- Dinitrophenol

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

04/14/2004 12:28 109 98.6 109 109 98.5 111 98.5 138 105 118
114 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324137117002901. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir] Station number Date (mm/dd/yyyy) Time (hh:mm) 2,4- Dinitro- toluene 2,6- Dinitro- toluene 1,2- Diphenyl- hydrazine Fluoranthene Fluorene Hexachloro- benzene Hexachloro- butadiene Hexachloro- cyclopentadiene Hexachloro- ethane Indeno[1,2,3-cd] pyrene Perdue Treatment Plant- imported raw water at Sweetwater Reservoir (SWR09) 04/14/2004 12:28 109 109 109 119 109 119 68.9 88.7 88.4 98.6 Table A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324137117002901. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir] Station number Date (mm/dd/yyyy) Time (hh:mm) Isophorone 2-Methyl-4,6- dinitrophenol Naphthalene Nitro- benzene 2- Nitrophenol 4- Nitrophenol

N-Nitrosodimethylamine

N-Nitrosodi-npropylamine

N-Nitrosodiphenylamine Pentachloro- phenol

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

04/14/2004 12:28 109 118 109 109 99.3 78.7 89.2 108 118 118

Table A2A. Quality-control matrix spike results for base-neutral acid (BNA) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[The site-identification number is 324137117002901. Time is denoted in 24-hour scale. Concentrations are given in percentage recovery. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir]

Station number Date (mm/dd/yyyy) Time (hh:mm) Phenan- threne Phenol Pyrene 1,2,4- Trichloro- benzene 2,4,6- Trichloro- phenol

2-Fluorophenol, 

surrogate

(percent) 

(L2325)

2-Fluorobiphenyl, 

surrogate

(percent) 

(49279)

Nitrobenzened5, 

surrogate 

(percent) 

(49280)

Phenold5, 

surrogate 

(percent) 

(90630)

Terphenyld14, 

surrogate 

(percent)

(49278)

2,4,6-

Tribromophenol, 

surrogate 

(percent) 

(90652)

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

04/14/2004 12:28 129 88.0 119 99 99.2 89.7 93.0 94.8 76.3 75.1 102
Appendix 115

Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Acenaphthene 

(34205)

Acenaphthylene 

(34200)

Anthracene 

(34220)

Benzo[a]

anthracene 

(34526)

Benzo[a]

pyrene 

(34247)

Benzo[b]

fluoranthene 

(34230)

Benzo[ghi]

perylene 

(34521)

Benzo[k]

fluoranthene 

(34242)

Benzyl 

n-butyl 

phthalate 

(34292)

4-

Bromophenyl 

phenyl ether 

(34636)

[LRL] [2] [2] [2] [2] [1] [2] [2] [1] [2] [2]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51 — — — — — — — — E0.5 —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31 — — — — — — E0.01 — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41 — — — E0.05 — — E0.03 — — —

Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

bis(2-Chloroethoxy) 

methane 

(34278)

bis(2-Chloroethyl) 

ether 

(34273)

bis(2-Chloroisopropyl) 

ether 

(34283)

4-Chloro3-methylphenol 

(34452)

2-

Chloronaphthalene 

(34581)

2-

Chlorophenol 

(34586)

4-

Chlorophenyl 

phenyl ether 

(34641)

[LRL] [1] [1] [1] [2] [1] [1] [1]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51 — — — — — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31 — — — — — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41 — — — — — — —
116 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Chrysene (34320) bis(2-Ethylhexyl) phthalate (39100) Dibenzo[a,h] anthracene (34556) 1,2- Dichlorobenzene (34536) 1,3- Dichlorobenzene (34566) 1,4- Dichlorobenzene (34571) 2,4- Dichlorophenol (34601) [LRL] [1] [2] [2] [2] [1] [1] [2] Perdue Treatment Plant-finished water at Sweetwater Reservoir (SWR08) 12/17/2003 13:51

—

—

—

—

—

—

—

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31

—

—

—

—

—

—

—

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41

—

—

—

—

—

—

—

Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Diethyl 

phthalate 

(34336)

2,4-

Dimethylphenol 

(34606)

Dimethyl 

phthalate 

(34341)

Di-n-butyl 

phthalate 

(39110)

Di-n-octyl 

phthalate 

(34596)

2,4-

Dinitrophenol 

(34616)

2,4-

Dinitrotoluene 

(34611)

2,6-

Dinitrotoluene 

(34626)

[LRL] [2] [2] [1] [2] [2] [3] [1] [2]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51

—

—

— E1

—

—

—

—

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31

—

—

—

—

—

—

—

—

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41

—

—

—

—

—

—

—

—
Appendix 117

Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

1,2-

Diphenylhydrazine 

(82626)

Fluoranthene 

(34376)

Fluorene 

(34381)

Hexachlorobenzene 

(39700)

Hexachlorobutadiene 

(39702)

Hexachlorocyclopentadiene 

(34386)

Hexachloroethane 

(34396)

[LRL] [2] [1] [1] [1] [1] [1] [2]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51 — — — — — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31 — — — — — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41 — E0.06 — — — — —

Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Indeno[1,2,3-cd]

pyrene 

(34403)

Isophorone 

(34408)

2-Methyl-4,6-

dinitrophenol 

(34657)

Naphthalene 

(34696)

Nitrobenzene 

(34447)

2-Nitrophenol 

(34591)

4-Nitrophenol 

(34646)

[LRL] [2] [2] [2] [2] [1] [1] [1]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51 — — — — — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31 — — — — — — —

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41 E0.04 — — — — — —
118 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm)

N-Nitrosodimethylamine 

(34438)

N-Nitrosodi-npropylamine 

(34428)

N-Nitrosodiphenylamine 

(34433)

Pentachlorophenol 

(39032)

Phenanthrene 

(34461)

Phenol 

(34694)

Pyrene 

(34469)

1,2,4-

Trichlorobenzene 

(34551)

[LRL] [2] [2] [2] [2] [1] [1.6] [2] [1]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51

—

—

—

—

—

—

—

—

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31

—

—

—

—

— E0.3

—

—

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41

—

—

—

—

— E0.1

—

—

Table A2B. Quality-control replicate results for base-neutral acid (BNAs) compounds in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1383, collected from the Sweetwater Reservoir (SWR) watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

2,4,6-

Trichlorophenol 

(34621)

2-Fluorophenol, 

surrogate 

(percent)

(L2325)

2-Fluorobiphenyl, 

surrogate 

(percent)

(49279)

Nitrobenzened5, 

surrogate

(percent) 

(49280)

Phenold5, 

surrogate 

(percent)

(90630)

Terphenyld14, 

surrogate 

(percent)

(49278)

2,4,6-

Tribromophenol, 

surrogate 

(percent)

(90652) [LRL] [1]

Perdue Treatment Plant-finished 

water at Sweetwater Reservoir (SWR08)

12/17/2003 13:51

— 2.90 86.8 93.2 2.20 51.1 128

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31

— 92.2 111 119 70.9 94.6 124

Perdue Treatment Plant-imported 

raw water at Sweetwater Reservoir (SWR09)

04/13/2005 08:41

— 56.4 82.6 90.9 44.9 76.2 74.1
Appendix 119

Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.[The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Acetochlor 

(49260)

Alachlor 

(46342)

Atrazine 

(39632)

Azinphosmethyl 

(82686)

Azinphosmethyl 

oxygen 

analog 

(61635)

Benfluralin 

(82673)

Carbaryl 

(82680)

2-Chloro-2,6-

diethylacetanilide 

(61618)

4-Chloro2-methylphenol 

(61633)

Chlorpyrifos 

(38933)

[LRL] [0.006] [0.005] [0.007] [0.050] [0.02] [0.010] [0.041] [0.005] [0.006] [0.005]

Sweetwater Reservoir 

near pump tower (SWR01) 

02/17/2004 15:41 5.0 — — E0.003 — — — — — — —

Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.—Continued[The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Chlorpyrifos 

oxygen analog 

(61636)

Cyfluthrin 

(61585)

Cypermethrin 

(61586)

Dacthal 

(DCPA) 

(82682)

Deethylatriazine 

(04040)

Desulfinyl 

fipronil 

(62170)

Desulfinylfipronil 

amide 

(62169)

Diazinon 

(39572)

3,4-

Dichloroaniline 

(61625)

[LRL] [0.06] [0.008] [0.009] [0.003] [0.006] [0.012] [0.029] [0.005] [0.005]

Sweetwater Reservoir 

near pump tower (SWR01) 

02/17/2004 15:41 5.0 — — — — — — — — E0.004
120 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.—Continued [The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Dichlorvos (38775) Dicrotophos (38454) Dieldrin (39381) 2,6- Diethylaniline (82660) Dimethoate (82662) Ethion (82346) Ethion monoxon (61644) 2-Ethyl-6- methylaniline (61620) 2-[(2-Ethyl- 6-methylphenyl)- amino]-1-propanol (61615) [LRL] [0.01] [0.08] [0.009] [0.006] [0.006] [0.004] [0.03] [0.004] [0.1] Sweetwater Reservoir near pump tower (SWR01) 02/17/2004 15:41 5.0

—

—

—

—

—

—

—

—

—

Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.—Continued[The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Fenamiphos 

(61591)

Fenamiphos 

sulfone 

(61645)

Fenamiphos 

sulfoxide 

(61646)

Fipronil 

(62166)

Fipronil 

sulfide 

(62167)

Fipronil 

sulfone 

(62168)

Fonofos 

(04095)

Fonofos 

oxygen 

analog 

(61649)

Hexazinone 

(04025)

Iprodione 

(61593)

[LRL] [0.03] [0.008] [0.03] [0.016] [0.013] [0.024] [0.003] [0.002] [0.013] [1]

Sweetwater Reservoir 

near pump tower (SWR01) 

02/17/2004 15:41 5.0

—

—

—

—

—

—

—

— E0.009

—
Appendix 121

Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.—Continued[The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Isofenphos 

(61594)

Malaoxon 

(61652)

Malathion 

(39532)

Metalaxyl 

(61596)

Methidathion 

(61598)

Metolachlor 

(39415)

Metribuzin 

(82630)

Myclobutanil 

(61599)

1-

Naphthol 

(49295)

[LRL] [0.003] [0.008] [0.027] [0.005] [0.006] [0.013] [0.006] [0.008] [0.09]

Sweetwater Reservoir 

near pump tower (SWR01) 

02/17/2004 15:41 5.0 — — E0.006 — — E0.005 — — —

Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.—Continued[The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Paraoxonmethyl 

(61664)

Parathionmethyl 

(82667)

cisPermethrin 

(82687)

Phorate 

(82664)

Phorate 

oxygen 

analog 

(61666)

Phosmet 

(61601)

Phosmet 

oxygen 

analog 

(61668)

Prometon 

(04037)

Prometryn 

(04036)

[LRL] [0.03] [0.015] [0.006] [0.011] [0.10] [0.008] [0.06] [0.006] [0.005]

Sweetwater Reservoir 

near pump tower (SWR01) 

02/17/2004 15:41 5.0 — — — — — — — E0.005 E0.003
122 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A3. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2003, collected from Sweetwater Reservoir, San Diego County, California.—Continued [The site-identification number is 324130117002501. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Pronamide (82676) Simazine (04035) Tebuthiuron (82670) Terbufos (82675) Terbufos oxygen analog sulfone (61674) Terbuthylazine (04022) Trifluralin (82661) Diazinon 

d10, 

surrogate 

(percent)

(99994)

HCH, 

α-d6, 

surrogate 

(percent) 

(99995)

[LRL] [0.004] [0.005] [0.016] [0.02] [0.07] [0.01] [0.009]

Sweetwater Reservoir 

near pump tower (SWR01) 

02/17/2004 15:41 5.0

— 0.006 E0.010

—

—

—

— 98.3 80.3
Appendix 123

Table A4. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Acifluorfen 

(49315)

Aldicarb 

(49312)

Aldicarb 

sulfone 

(49313)

Aldicarb 

sulfoxide 

(46314)

Atrazine 

(39632)

Bendiocarb 

(50299)

Benomyl 

(50300)

Bensulfuronmethyl 

(61693)

Bentazon 

(38711)

Bromacil 

(04029)

[LRL] [0.028, 0.007] [0.04] [0.02] [0.022, 0.008] [0.008, 0.009] [0.02, 0.03] [0.022, 0.004] [0.02] [0.01] [0.02, 0.03]

Sweetwater Reservoir near 

pump tower (SWR01)

07/12/2005 11:01 2.0 — — — — — — — — — —

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

10/12/2004 16:31 0.1 — — — — — — — — — —

Sweetwater River at lowflow diversion upstream 

from Sweetwater Reservoir (LFDD)

07/14/2004 10:11 0.1 — — — — — — — — — —

Table A4. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Bromoxynil 

(49311)

Caffeine 

(50305)

Carbaryl 

(49310)

Carbofuran 

(49309)

Chloramben, 

methyl 

ester

(61188)

Chlorimuronethyl 

(50306)

N-(4-

Chlorophenyl)-

N-methyl urea 

(61692)

Clopyralid 

(49305)

Cycloate 

(04031)

2,4-D and 

2,4-methyl 

ester 

(66496)

[LRL] [0.03, 0.02] [0.018] [0.02, 0.03] [0.016, 0.006] [0.02] [0.032, 0.010] [0.04, 0.02] [0.02, 0.01] [0.01] [0.04, 0.02]

Sweetwater Reservoir near 

pump tower (SWR01)

07/12/2005 11:01 2.0 — 0.033 — — — — — — — —

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

10/12/2004 16:31 0.1 — — — — — — — — — E0.02

Sweetwater River at lowflow diversion upstream 

from Sweetwater Reservoir (LFDD)

07/14/2004 10:11 0.1 — E0.014 — — — — — — — —
124 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A4. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory report- ing level; LRL, laboratory reporting level] Station number Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) 2,4-DB (38746) Dacthal monoacid (49304) Deethyl- atriazine (04040) Deusopro- pylatriazine (04038) Dicamba (38442) Dichlorprop (49302) Dinoseb (49301) Diphenamid (04033) Diuron (49300) Fenuron (49297) Flumetsulam (61694) [LRL] [0.02] [0.03, 0.01] [0.03] [0.08, 0.01] [0.04, 0.01] [0.03, 0.01] [0.04, 0.01] [0.01, 0.3] [0.01] [0.02] [0.04] Sweetwater Reservoir near pump tower (SWR01) 07/12/2005 11:01 2.0

—

—

—

—

—

—

—

— 0.05

—

—

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

10/12/2004 16:31 0.1

—

—

—

—

—

—

—

— 0.05

—

—

Sweetwater River at lowflow diversion upstream 

from Sweetwater Reservoir (LFDD)

07/14/2004 10:11 0.1

—

—

—

—

—

—

—

—

—

— NA

Table A4. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Fluometuron 

(38811)

Hydroxyatriazine 

(50355)

3-Hydroxy 

carbofuran 

(49308)

Imazaquin 

(50356)

Imazethapyr 

(50407)

Imidacloprid 

(61695)

Linuron 

(38478)

MCPA 

(38482)

MCPB 

(38487)

Metalaxyl 

(50359)

[LRL] [0.02, 0.03] [0.032] [0.008, 0.006] [0.04, 0.02] [0.04, 0.02] [0.020] [0.01] [0.03, 0.02] [0.01] [0.01, 0.02]

Sweetwater Reservoir near 

pump tower (SWR01)

07/12/2005 11:01 2.0

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

10/12/2004 16:31 0.1

— E0.016

—

—

—

—

—

—

—

—

Sweetwater River at lowflow diversion upstream 

from Sweetwater Reservoir (LFDD)

07/14/2004 10:11 0.1

— E0.013

—

—

— 0.025

—

—

—

—
Appendix 125

Table A4. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Methiocarb 

(38501)

Methomyl 

(49296)

Metsulfuronmethyl 

(61697)

Neburon 

(49294)

Nicosulfuron 

(50364)

Norflurazon 

(49293)

Oryzalin 

(49292)

Oxamyl 

(38866)

Picloram 

(49291)

Propham 

(49236)

[LRL] [0.010, 0.008] [0.020, 0.004] [0.03] [0.01] [0.04, 0.01] [0.02] [0.01, 0.02] [0.03, 0.01] [0.03, 0.02] [0.030, 0.010]

Sweetwater Reservoir near 

pump tower (SWR01)

07/12/2005 11:01 2.0 — — — — — — — — — —

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

10/12/2004 16:31 0.1 — — — — — — — — — —

Sweetwater River at lowflow diversion upstream 

from Sweetwater Reservoir (LFDD)

07/14/2004 10:11 0.1 — — — — — — — — — —

Table A4. Quality-control replicate results of pesticide concentrations in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 2060, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit number below each compound name, the parameter code, is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Propiconazole 

(50471)

Propoxur 

(38538)

Siduron 

(38548)

Sulfometuronmethyl 

(50337)

Tebuthiuron 

(82670)

Terbacil 

(04032)

Triclopyr 

(49235)

Barban, 

surrogate

(percent)

(90640)

Caffeine-C13, 

surrogate 

(percent)

(99959)

2,4,5-T, 

surrogate

(percent)

(99958) [LRL] [0.01, 0.02] [0.008] [0.02] [0.038, 0.009] [0.026] [0.016, 0.010] [0.03, 0.02]

Sweetwater Reservoir near 

pump tower (SWR01)

07/12/2005 11:01 2.0 — — — — — — — 101 96.8 103

Perdue Treatment Plantimported raw water at 

Sweetwater Reservoir (SWR09)

10/12/2004 16:31 0.1 — — — — — — — 105 104 69.6

Sweetwater River at lowflow diversion upstream 

from Sweetwater Reservoir (LFDD)

07/14/2004 10:11 0.1 — — — — — — — E43.1 E115 68.8
126 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California. [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey comput- erized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Station number Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Acetophenone (62064) Acetyl hexamethyl tetrahydro naphthalene (62065) Anthracene (34221) 9,10- Anthraquinone (62066) Benzo[a]pyrene (34248) Benzophenone (62067) Bromacil (04029) 3-tert-Butyl- 4-hydroxyan- isole (BHA) (62059) [LRL] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5] Sweetwater River at low-flow diversion dam upstream from Sweetwater Reservoir (LFDD) 02/18/2004 15:11 0.1

—

—

—

—

—

—

—

—

Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Caffeine 

(50305)

Camphor 

(62070)

Carbaryl 

(82680)

Carbazole 

(62071)

Chlorpyrifos 

(38933)

Cholesterol 

(62072)

3-βCoprostanol 

(62057)

Cotinine 

(62005)

p-Cresol 

(62084)

[LRL] [0.5] [0.5] [1] [0.5] [0.5] [2] [2] [1] [1]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1

—

—

—

—

—

—

—

—

—
Appendix 127

Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

4-

Cumylphenol 

(62060)

1,4-

Dichlorobenzene 

(34572)

Dichlorvos 

(38775)

N,Ndiethyl-mtoluamide 

(DEET) 

(62082)

2,6-

Dimethylnaphthalene 

(62055)

Fluoranthene 

(34377)

Hexahydrohexamethyl 

cyclopentabenzopyran 

(62075)

[LRL] [1] [0.5] [1] [0.5] [0.5] [0.5] [0.5]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1 — — — — — — —

Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Indole 

(62076)

Isoborneol 

(62077)

Isophorone 

(34409)

Isopropylbenzene 

(62078)

Isoquinoline 

(62079)

d-Limonene 

(62073)

Menthol 

(62080)

Metalaxyl 

(50359)

3-Methyl1(H)-indole 

(62058)

[LRL] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5] [1]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1 — — — — — — — — —
128 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey comput- erized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Station number Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) 5-Methyl-1(

H)-

benzotriazole 

(62063)

1-

Methylnaphthalene 

(62054)

2-

Methylnaphthalene 

(62056)

Methyl 

salicylate 

(62081)

Naphthalene 

(34443)

4-

Nonylphenol 

(total) 

(62085)

4-

Nonylphenol 

diethoxy 

(62083)

[LRL] [2] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1

—

—

—

—

—

—

—

Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

4-nOctylphenol 

(62061)

4-tertOctylphenol 

(62062)

4-

Octylphenol 

diethoxylates 

(61705)

4-

Octylphenol 

monoethoxylates 

(61706)

Phenanthrene 

(34462)

Phenol 

(34466)

Prometon 

(04037)

Pyrene 

(34470)

[LRL] [1] [1] [1] [1] [0.5] [0.5] [0.5] [0.5]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1

—

—

—

—

—

—

—

—
Appendix 129

Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

β-Sitosterol 

(62068)

β-Stigmastanol 

(62086)

Tetrachloroethene 

(34476)

Tribromomethane 

(34288)

Tributyl 

phosphate 

(62089)

Triclosan 

(62090)

Triethyl 

citrate 

(62091)

Triphenyl 

phosphate 

(62092)

[LRL] [2] [2] [0.5] [0.5] [0.5] [1] [0.5] [0.5]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1 — — — — — — — —

Table A5. Quality-control replicate results for anthropogenic indicator compounds (AICs) analyzed in filtered-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1433, collected from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [The site-identification number is 324311116565901. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station number Date (mm/dd/yyyy) Time (hh:mm)

Sampling 

depth 

(meters) 

(00098)

Tri(2-butoxyethyl) 

phosphate 

(62093)

Tri(2-chloroethyl) 

phosphate 

(62087)

Tri(dichloroisopropyl) 

phosphate 

(62088)

Caffeine-C13, 

surrogate 

(percent)

(99584)

Decafluorobiphenyl, 

surrogate 

(percent)

(99585)

Fluoranthene-d10, 

surrogate 

(percent)

(99586) [LRL] [0.5] [0.5] [0.5]

Sweetwater River at 

low-flow diversion dam upstream from Sweetwater Reservoir (LFDD)

02/18/2004 15:11 0.1 — — — 109 82.6 95.7
130 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A6A. Quality-control spike results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, collected from the Sweetwater Reservoir, San Diego County, California. [See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as percentages. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed] Site name Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Type Aluminum Antimony Barium Beryllium Cadmium Chromium Cobalt Copper Lead Lithium Sweetwater Reservoir near pump tower (SWR01) 07/13/2004 13:33 2.0 Spike 122 113 113 116 111 125 113 108 118 116 Sweetwater Reservoir near pump tower (SWR01) 07/13/2004 13:34 2.0 Spike replicate 142 120 121 128 118 135 128 120 127 131 Sweetwater Reservoir near pump tower (SWR01) 07/07/2009 10:48 3.0 Spike 134 94.0 111 89.0 86.4 103 95.4 91.0 104 117 Sweetwater Reservoir near pump tower (SWR01) 07/07/2009 10:49 3.0 Spike replicate 141 93.5 75.5 88.5 83.4 99.0 92.9 87.0 103 106 Sweetwater Reservoir center of minimum pool (SWR03) 07/15/2008 11:13 2.0 Spike 106 96.6 105 102 91.6 101 100 92.5 106 102 Table A6A. Quality-control spike results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, collected from the Sweetwater Reservoir, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as percentages. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; NA, not analyzed] Site name Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Type Manganese Molybdenum Nickel Selenium Silver Strontium Thallium Uranium (natural) Zinc Sweetwater Reservoir near pump tower (SWR01) 07/13/2004 13:33 2.0 Spike 105 117 113 116 114 104 116 104 NA Sweetwater Reservoir near pump tower (SWR01) 07/13/2004 13:34 2.0 Spike replicate 112 126 127 122 121 100 125 112 NA Sweetwater Reservoir near 

pump tower (SWR01) 

07/07/2009 10:48 3.0 Spike 107 103 89.6 132 115.9 230 103 87.5 110

Sweetwater Reservoir near 

pump tower (SWR01) 

07/07/2009 10:49 3.0 Spike 

replicate

96.5 102 87.6 93.1 115.9 75.0 102 83.0 110

Sweetwater Reservoir 

center of minimum pool (SWR03)

07/15/2008 11:13 2.0 Spike 98.4 111 94.7 93.2 92.8 76.0 104 112 82.6
Appendix 131

Table A6B. Quality-control replicate and blank results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, collected from the Sweetwater Reservoir, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

Time

(hh:mm)

Sampling 

depth 

(meters) 

(00098)

Type Aluminum (01105) Antimony (01097) Barium (01007) Beryllium (01012) Cadmium (01027) Chromium (01034) Cobalt (01037) Copper (01042) Lead (01051) Lithium (01132)

[LRL] [5.6] [0.36] [0.6] [0.06] [0.04] [0.42] [0.04] [1.4] [0.06] [0.30]

Sweetwater Reservoir near pump tower (SWR01)

07/13/2004 13:31 2.0 Replicate 25 E0.2 64.7 — E0.2 E0.40 0.344 2.9 0.07 20.7

10/11/2006 11:51 4.0 Replicate 39 E0.2 31.6 — — E0.36 0.198 1.6 0.10 4.8

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:01 4.0 Replicate 217 E0.2 81.3 — — — 0.575 7.0 0.24 21.5

01/12/2005 12:11 7.0 Replicate 264 E0.2 72.0 — — 0.5 0.571 4.8 0.34 14.3

10/11/2005 11:31 6.0 Replicate 44 E0.2 45.8 — E0.2 E0.13 0.120 0.6 0.08 8.4

04/07/2006 12:01 0.1 Replicate 42 E0.1 50.1 — — E0.03 0.328 3.3 — 4.8

10/09/2007 12:21 5.0 Replicate 70 E0.3 52.8 — — — 0.100 1.4 0.10 11.0

10/14/2008 13:05 4.0 Replicate 58 E0.2 77.4 — — E0.29 E0.09 — 0.24 6.8

Perdue Treatment Plant-finished water at Sweetwater Reservoir (SWR08)

07/12/2005 14:18 na Replicate E2 E0.2 44.7 — — — 0.710 3.8 0.40 8.1

01/10/2006 15:01 na Replicate E2 E0.2 57.4 — — E0.09 0.215 3.2 — 9.2

01/09/2007 13:36 na Field blank — — — — — — — — — —

07/10/2007 13:18 na Field blank — — — — — — — — — —

04/14/2009 14:31 na Replicate E3.7 E0.3 123 — — — — — — 38.8

Perdue Treatment Plant-imported raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31 na Replicate 20 1.5 82.9 — 0.04 — 0.291 39 95.1 24.5

01/08/2008 14:11 na Field blank — — — — — — — — — —

01/13/2009 14:18 na Field blank — — — — — — — — — —
132 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A6B. Quality-control replicate and blank results for metals in whole-water samples, using U.S. Geological Survey National Water Quality Laboratory schedule 1080, collected from the Sweetwater Reservoir, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. The five-digit parameter code number in parentheses below each compound name is used in the U.S. Geological Survey computer- ized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (μg/L) unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; na, not applicable; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Time (hh:mm) Sampling depth (meters) (00098) Type Manganese (01055) Molybdenum (01062) Nickel (01067) Selenium (01147) Silver (01077) Strontium (01082) Thallium (01059) Uranium (natural) (28011) Zinc (01092) [LRL] [0.8] [0.1] [0.36] [0.10] [0.16] [1.6] [0.2] [0.028] [2] Sweetwater Reservoir near pump tower (SWR01) 07/13/2004 13:31 2.0 Replicate 12.4 4.4 2.05 0.9

— 766

— 4.24 2

10/11/2006 11:51 4.0 Replicate 90.0 3.4 0.64 0.3

— 452

— 3.66 2

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 13:01 4.0 Replicate 116 4.8 3.16 1.2

— 758

— 5.16 2

01/12/2005 12:11 7.0 Replicate 41.1 4.1 1.53 1.5

— 648

— 4.23 3

10/11/2005 11:31 6.0 Replicate 117 3.3 0.59 0.4

— 498

— 3.32 2

04/07/2006 12:01 0.1 Replicate 11.3 3.6 1.86 0.4

— 403

— 3.49

—

10/09/2007 12:21 5.0 Replicate 266 3.8 0.57 0.4

— 584

— 3.56

—

10/14/2008 13:05 4.0 Replicate 479 3.9 0.62 0.3

— 568

— 5.17 E1.4

Perdue Treatment Plant-finished water at Sweetwater Reservoir (SWR08)

07/12/2005 14:18 na Replicate 78.1 3.9 3.79 1.2

— 462

— 3.49 E1.3

01/10/2006 15:01 na Replicate 2.1 3.6 2.44 0.2

— 568

— 4.12 6

01/09/2007 13:36 na Field blank

—

—

—

— E0.01

—

—

—

—

07/10/2007 13:18 na Field blank

— E0.04

—

— E0.01

— E0.12 E0.01

—

04/14/2009 14:31 na Replicate E0.23 5.32 1.12 1.5

— 997

— 4.87

—

Perdue Treatment Plant-imported raw water at Sweetwater Reservoir (SWR09)

10/12/2004 16:31 na Replicate 6.1 3.9 3.96 1.5

— 654

— 3.56 8

01/08/2008 14:11 na Field blank

—

—

—

— 0.17

—

—

—

—

01/13/2009 14:18 na Field blank

—

—

—

—

—

—

—

—

—
Appendix 133

Table A6C. Quality-control replicate comparison for metals in whole-water samples collected from the Sweetwater Reservoir watershed, San Diego County, California.[See table 1 for site-identification number. Values are given in percentage of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: mm/dd/yyyy, month/day/year; na, not applicable; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

Sampling 

depth 

(meters) 

(00098)

Aluminum 

(01105)

Antimony 

(01097)

Barium 

(01007)

Beryllium 

(01012)

Cadmium 

(01027)

Chromium 

(01034)

Cobalt 

(01037)

Copper 

(01042)

Lead 

(01051)

Lithium 

(01132)

Sweetwater Reservoir near pump tower (SWR01) 

07/13/2004 2.0 86.4 130 100 — nr nr 96.6 97.6 140 96.7

10/11/2006 4.0 95.1 100 93.2 — — 113 99.5 37.2 100 98.0

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 4.0 103 118 102 — nr — 102 169 106 101

01/12/2005 7.0 87.7 120 99.0 — — 87.0 95.3 101 94.4 98.6

10/11/2005 6.0 87.5 120 98.7 — — 92.9 38.6 34.4 100 92.8

04/07/2006 0.1 122 54.6 100 — — 30.0 108 149 — 98.8

10/09/2007 5.0 104 100 101 — — nr 100 25.5 90.9 101

10/14/2008 4.0 100 100 103 — — 112 100 — 218 101

Perdue Treatment Plant-finished water at Sweetwater Reservoir (SWR08)

07/12/2005 na 119 85.1 100 — — — 102 105 144 101

01/10/2006 na nr 103 100 — — 50.0 69.6 94.1 — 107

04/14/2009 na nr 100 99.2 — — — — — — 101

Perdue Treatment Plant-imported raw water at Sweetwater Reservoir (SWR09)

10/12/2004 na 107 96.2 101 — — — 99.7 102 99.3 100
134 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table A6C. Quality-control replicate comparison for metals in whole-water samples collected from the Sweetwater Reservoir watershed, San Diego County, California. —Continued [See table 1 for site-identification number. Values are given in percentage of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: mm/dd/yyyy, month/day/year; na, not applicable; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Sampling depth (meters) (00098) Manganese (01055) Molybdenum (01062) Nickel (01067) Selenium (01147) Silver (01077) Strontium (01082) Thallium (01059) Uranium (natural) (28011) Zinc (01092) Sweetwater Reservoir near pump tower (SWR01) 07/13/2004 2.0 93.2 98.4 92.3 114

— 99.2

— 108 99.3

10/11/2006 4.0 85.7 100 105 96.7

— 100.0

— 101 36.4

Sweetwater Reservoir center of minimum pool (SWR03)

12/16/2003 4.0 105 101 96.9 111

— 102

— 102 104

01/12/2005 7.0 98.1 100 96.8 98.7

— 100

— 99.5 100

10/11/2005 6.0 84.2 101 31.2 121

— 94.7

— 103 101

04/07/2006 0.1 101 99.7 141 106

— 99.8

— 99.7

—

10/09/2007 5.0 103 100 40.7 106

— 101

— 102

—

10/14/2008 4.0 107 100 96.9 96.4

— 102

— 102 nr

Perdue Treatment Plant-finished water at Sweetwater Reservoir (SWR08)

07/12/2005 na 101 101 94.3 121

— 99.8

— 100 71.4

01/10/2006 na 95.0 95.1 92.4 105

— 103

— 99.0 487

04/14/2009 na nr 98.1 100 100

— 98.7

— 100 100

Perdue Treatment Plant-imported raw water at Sweetwater Reservoir (SWR09)

10/12/2004 na 96.7 98.9 101 125

— 100

— 100 94.9
Appendix 135

Appendix B Tables. 
136 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B1A. Quality-control replicate results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate 

Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: mm of Hg, millimeters of 

mercury; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; °C, degree Celsius; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

11/29/2003 761.9 15.0 — — — — —

12/11/2003 761.6 12.0 — — — — —

02/03/2005 762.4 15.7 — — — — —

03/11/2005 760.6 15.0 — — — — —

01/29/2006 765.2 11.5 — — — — —

04/23/2006 764.7 13.2 — — — — —

09/14/2006 756.1 18.8 — — — — —

02/17/2007 761.7 19.1 — — — — —

05/24/2007 759.0 17.3 — — — — —

01/07/2008 760.1 12.0 — — — — —

04/12/2008 708.7 22.8 — — — — —

05/30/2008 703.2 17.2 — — — — —

09/27/2008 719.1 20.9 — — — — —

12/20/2008 766.1 9.2 — — — — —
Appendix 137

Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Acetone Diethyl ether 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Methylene chloride Methylacetate 3-Chloro- 1-propene Carbon disulfide trans 1,2- Dichloroethene

[LRL] [0.20] [0.15] [0.06] [0.12] [0.19] [0.09] [0.16] [0.10] [0.16] [0.08]

11/29/2003 761.9 15.0 1.31 — — E0.10 — 0.31 — — — —

12/11/2003 761.6 12.0 1.06 — — 0.21 — E0.06 — — — —

02/03/2005 762.4 15.7 2.90 — — E0.04 — 0.35 — — E0.10 —01/29/2006 765.2 11.5 3.20 — — E0.09 — E0.08 — — — —04/23/2006 764.7 13.2 0.89 — — E0.02 — — — — E0.03 —09/14/2006 756.1 18.8 1.02 — — E0.05 — E0.02 — — E0.03 —02/17/2007 761.7 19.1 2.43 — — E0.05 — 0.33 — — E0.09 —

05/24/2007 759.0 17.3 1.87 — — E0.04 — 0.10 — — — —05/30/2008 703.2 17.2 0.81 — — E0.02 — E0.05 — — E0.02 —09/27/2008 719.1 20.9 0.42 — — E0.02 — E0.03 — — — —12/20/2008 766.1 9.2 0.83 — — E0.03 — E0.05 — — E0.02 —

Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Methyl tertbutyl ether 

(MTBE)

1,1- 

Dichloroethane

2-Butanone 

(methyl ethyl 

ketone)

Diisopropyl 

ether 

(DIPE)

Methyl 

acrylonitrile

cis-1,2-

Dichloroethene

Bromochloro 

methane

Trichloromethane 

(chloroform)

2,2-

Dichloropropene

Methyl 

acrylate

[LRL] [0.10] [0.08] [0.14] [0.08] [0.16] [0.09] [0.09] [0.06] [0.07] [0.15]

11/29/2003 761.9 15.0 0.37 — 0.29 — — — — E0.03 — —

12/11/2003 761.6 12.0 0.24 — 0.18 — — — — E0.01 — —

02/03/2005 762.4 15.7 E0.02 — 0.20 — — — — E0.03 — —01/29/2006 765.2 11.5 E0.07 — 0.59 — — — — E0.01 — —04/23/2006 764.7 13.2 — — E0.05 — — — — — — —

09/14/2006 756.1 18.8 E0.05 — E0.11 — — — — E0.01 — —02/17/2007 761.7 19.1 E0.03 — 0.27 — — — — E0.04 — —

05/24/2007 759.0 17.3 E0.01 — 0.29 — — — — E0.03 — —05/30/2008 703.2 17.2 E0.01 — 0.19 — — — — E0.03 — —09/27/2008 719.1 20.9 E0.01 — 0.19 — — — — E0.02 — —12/20/2008 766.1 9.2 E0.02 — 0.31 — — — — 0.06 — —
138 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millime- ters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Date (mm/dd/yyyy) Pressure (mm of Hg) Temperature (°C) Ethyl tert- butyl ether (ETBE) Tetrahydrofran tert-Amyl alcohol 1,2- Dichloroethane 1,1,1- Trichloroethane 1,1- Dichloropropene Tetrachloro- methane Benzene tert-Pentyl methyl ether Dibromo- methane [LRL] [0.09] [0.16] [0.12] [0.09] [0.06] [0.09] [0.11] [0.11] [0.20] [0.08] 11/29/2003 761.9 15.0 E0.02

— E0.02

— E0.03

— 0.11 0.88

—

—

12/11/2003 761.6 12.0 E0.02

— E0.03

— E0.04

— 0.12 0.54

—

—

02/03/2005 762.4 15.7

—

—

— E0.007 E0.02

— E0.09 0.56

—

—

01/29/2006 765.2 11.5

— E0.06

—

— E0.03

— 0.17 0.68

—

—

04/23/2006 764.7 13.2

—

—

—

—

—

—

—

—

—

—

09/14/2006 756.1 18.8 E0.01

— E0.01

— E0.02

— E0.13 0.23

—

—

02/17/2007 761.7 19.1

—

—

—

— E0.02

— 0.11 0.67

—

—

05/24/2007 759.0 17.3

—

—

—

— E0.03

— 0.15 0.19

—

—

05/30/2008 703.2 17.2

—

—

—

— E0.01

— E0.09

—

—

—

09/27/2008 719.1 20.9

—

—

—

— E0.01

— 0.11

—

—

—

12/20/2008 766.1 9.2

—

—

— E0.019 E0.03

— 0.18 0.51

—

—

Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

1,2-

Dichloropropane

Trichloroethene 

(TCE)

Bromodichloromethane Methylmeth- acrylate cis 1,3- Dichloro- propene 4-Methyl- 2-pentanone (MIBK) trans 1,3- Dichloro- propene 1,1,2- Trichloro- ethane Toluene 1,3- Dichloro- propene

[LRL] [0.07] [0.07] [0.05] [0.12] [0.08] [0.10] [0.06] [0.06] [0.08] [0.09]

11/29/2003 761.9 15.0

— E0.02

—

—

— E0.06

—

— 1.88 E0.02

12/11/2003 761.6 12.0

— E0.01

—

—

— E0.06

—

— 1.41

—

02/03/2005 762.4 15.7

— E0.004

—

—

— E0.02

—

— 0.35

—

01/29/2006 765.2 11.5

— E0.02

—

—

— E0.03

—

— 1.14

—

04/23/2006 764.7 13.2

—

—

—

—

—

—

—

—

—

—

09/14/2006 756.1 18.8

— E0.01

—

—

— E0.02

—

— 0.27

—

02/17/2007 761.7 19.1

— E0.01

—

—

— E0.03

—

— 1.07

—

05/24/2007 759.0 17.3

— E0.01

—

—

— E0.02

—

— 0.32

—

05/30/2008 703.2 17.2

— E0.05

—

—

— E0.01

—

— 0.36

—

09/27/2008 719.1 20.9

—

—

—

—

— E0.03

—

— 0.64

—

12/20/2008 766.1 9.2

— E0.01

—

—

— E0.01

—

— 0.74

—
Appendix 139

Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Ethylmethacrylate 2-Hexanone (MBK) Dibromochloro- methane 1,2- Dibromo- ethane Tetrachloro- ethene (PCE) 1,1,1,2- Tetrachloro- ethane Chlorobenzene Ethylbenzene m and p- Xylene Bromoform (tribromo- methane)

[LRL] [0.10] [0.10] [0.05] [0.05] [0.05] [0.60] [0.09] [0.07] [0.09] [0.11]

11/29/2003 761.9 15.0 — E0.09 — — E0.02 — E0.003 0.30 0.91 —

12/11/2003 761.6 12.0 — E0.06 — — E0.02 — — 0.22 0.84 —

02/03/2005 762.4 15.7 — E0.03 — — E0.02 — E0.01 0.07 0.23 —01/29/2006 765.2 11.5 — E0.02 — — 0.37 — E0.01 0.16 0.49 —04/23/2006 764.7 13.2 — — — — — — — — — —

09/14/2006 756.1 18.8 — E0.01 — — — — E0.01 E0.05 0.14 —02/17/2007 761.7 19.1 — E0.01 — — — — E0.01 0.18 0.56 —

05/24/2007 759.0 17.3 — E0.01 — — — — E0.01 E0.05 0.12 —05/30/2008 703.2 17.2 — E0.01 — — E0.03 — — 0.07 0.22 —09/27/2008 719.1 20.9 — E0.01 — — E0.01 — — 0.08 0.31 —12/20/2008 766.1 9.2 — E0.01 E0.04 — E0.02 — — 0.12 0.33 E0.03

Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

Ethenylbenzene 

(styrene)

1,1,2,2-

Tetrachloroethane o-Xylene

1,2,3-

Trichloropropene

trans-1,4-

Dichloro2-butene

Isopropylbenzene 

(cumene)

Bromobenzene n- propyl- benzene 1-Chloro- 2-methylbenzene 1-Chloro- 4-methylbenzene

[LRL] [0.09] [0.07] [0.07] [0.06] [0.10] [0.08] [0.06] [0.07] [0.07] [0.07]

11/29/2003 761.9 15.0 E0.06 — 0.38 — — E0.02 — E0.04 — —

12/11/2003 761.6 12.0 E0.05 — 0.29 — — E0.01 E0.04 E0.04 — —

02/03/2005 762.4 15.7 E0.01 — 0.08 — — E0.004 — E0.01 — —01/29/2006 765.2 11.5 E0.03 — 0.19 — — E0.01 — E0.05 — —04/23/2006 764.7 13.2 — — — — — — — — — —09/14/2006 756.1 18.8 — — E0.05 — — E0.01 — E0.01 — —

02/17/2007 761.7 19.1 E0.03 — 0.23 — — E0.01 — E0.03 — —05/24/2007 759.0 17.3 E0.07 — E0.05 — — E0.003 — E0.01 — —05/30/2008 703.2 17.2 — — 0.08 — — E0.004 — E0.01 — —

09/27/2008 719.1 20.9 E0.02 — 0.11 — — E0.004 — E0.02 — —12/20/2008 766.1 9.2 E0.04 — 0.13 — — E0.02 — E0.02 — —
140 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millime- ters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Date (mm/dd/yyyy) Pressure (mm of Hg) Temperature (°C) 1,3,5- Trimethyl- benzene 2- Ethyltoluene tert- Butylbenzene 1,2,4- Trimethyl- benzene sec- Butylbenzene 1,3- Dichloro- benzene 1,4- Dichloro- benzene 1-Isopropyl- 4-methylbenzene 1,2,3- Trimethyl- benzene 1,2- Dichloro- benzene

nButylbenzene

[LRL] [0.06] [0.08] [0.07] [0.07] [0.06] [0.07] [0.07] [0.07] [0.08] [0.08] [0.07]

11/29/2003 761.9 15.0 0.08 E0.07

— 0.28 E0.01

— E0.04 E0.03 E0.05

— E0.01

12/11/2003 761.6 12.0 0.07 E0.06

— 0.23 E0.003

— E0.04 E0.06 E0.05

— E0.01

02/03/2005 762.4 15.7 E0.02 E0.02

— E0.06

—

— E0.01 E0.01 E0.01

— E0.003

01/29/2006 765.2 11.5 0.11 0.08

— 0.31 E0.01

— E0.03 E0.03 E0.05

— E0.01

04/23/2006 764.7 13.2

—

—

—

—

—

—

—

—

—

—

—

09/14/2006 756.1 18.8 E0.01 E0.01

— E0.04

—

— E0.01 E0.01 E0.01

— E0.01

02/17/2007 761.7 19.1 E0.05 E0.04

— 0.16 E0.002

— E0.01 E0.02 E0.04

— E0.01

05/24/2007 759.0 17.3 E0.01 E0.01

— E0.02

—

— E0.01 E0.01 E0.01

— E0.003

05/30/2008 703.2 17.2 E0.02 E0.02

— E0.05

—

— E0.01 E0.01 E0.01

— E0.002

09/27/2008 719.1 20.9 E0.03 E0.02

— E0.09

—

— E0.01 E0.03 E0.02

— E0.01

12/20/2008 766.1 9.2 E0.03 E0.02

— E0.06 E0.01

— E0.01 E0.02 E0.03

— E0.01

Table B1B. Quality-control replicate results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed, °C, degree Celsius; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Date 

(mm/dd/yyyy)

Pressure 

(mm of Hg)

Temperature 

(°C)

1,2,-Dibromo3-chloropropene 

(DBCP)

Hexachloroethane 1,2,4,5-Tetra- methylbenzene 1,2,3,5-Tetra- methylbenzene 1,2,3,4-Tetra- methylbenzene 1,2,4 - Trichloro- benzene Naphthalene Hexachloro- butadiene 1,2,3- Trichloro- benzene

[LRL] [0.10] [0.07] [0.09] [0.06] [0.08] [0.06] [0.09] [0.05] [0.07]

11/29/2003 761.9 15.0

—

— E0.01 E0.02 E0.01

— E0.04

—

—

12/11/2003 761.6 12.0

—

— E0.01 E0.02 E0.004

— E0.04

—

—

02/03/2005 762.4 15.7

—

— E0.004 E0.003 E0.002

— E0.01

—

—

01/29/2006 765.2 11.5

—

— E0.01 E0.02 E0.01

— E0.04

—

—

04/23/2006 764.7 13.2

—

—

—

—

—

—

—

—

—

09/14/2006 756.1 18.8

—

— E0.01 E0.01 E0.01

— E0.01

—

—

02/17/2007 761.7 19.1

—

— E0.01 E0.02 E0.01

— E0.03

—

—

05/24/2007 759.0 17.3

—

— E0.003 E0.003 E0.003

— E0.01

—

—

05/30/2008 703.2 17.2

—

— E0.003 E0.004 E0.002

— E0.01

—

—

09/27/2008 719.1 20.9

—

— E0.003 E0.004 E0.003

— E0.01

—

—

12/20/2008 766.1 9.2

—

— E0.004 E0.01 E0.01

— E0.02

—

—
Appendix 141

Table B1C. Quality-control replicate comparison for medium/low-volatility volatile organic compounds (VOCs) detected in air samples, processed at the Oregon Graduate Institute, from the Sweetwater Reservoir atmospheric site, San Diego County, California.[The site-identification number is 324141117001601. Values are given in percent of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy) Acetone tert-Butyl alcohol Methylene chloride Carbon disulfide Methyl tert- butyl ether (MTBE) 2-Butanone (methyl ethyl ketone) Trichloromethane (chloroform) Ethyl tert- butyl ether (ETBE) Tetrahydrofran tert-Amyl alcohol

11/29/2003 83.4 143 96.1 — 98.2 87.9 75.0 100 — 100

12/11/2003 114 115 120 — 117 91.7 50.0 200 — 100

02/03/2005 77.2 66.7 89.7 66.7 66.7 62.6 100 — — —

01/29/2006 119 113 88.9 — 117 98.5 100 — 120 —04/23/2006 nr 200 — 25.0 — 250 — — — —09/14/2006 124 125 100 100 55.6 84.6 100 100 — 100

02/17/2007 123 100 107 nr 81.1 76.1 84.9 — — —

05/24/2007 93.4 100 83.3 — 70.6 93.5 93.8 — — —05/30/2008 90.0 50.0 71.4 66.7 125 119 194 — — —

09/27/2008 111 100 100 — 117 127 88.9 — — —

12/20/2008 59.7 100 50.0 200 133 93.9 137 — nr —

Table B1C. Quality-control replicate comparison for medium/low-volatility volatile organic compounds (VOCs) detected in air samples, processed at the Oregon Graduate Institute, from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Values are given in percent of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

1,2-

Dichloroethane

1,1,1-

Trichloroethane

Tetrachloromethane Benzene Trichloroethene (TCE) 4-Methyl- 2-pentanone (MIBK) Toluene 2-Hexanone (MBK) Dibromochloro- methane Tetrachloro- ethene (PCE)

11/29/2003 — 100 100 120 100 100 106 83.8 — 66.712/11/2003 — 100 133 82.4 65.0 64.4 103 96.7 — 100

02/03/2005 100 66.7 92.0 83.6 80.0 100 83.3 150 84.5 100

01/29/2006 — 150 111 135 100 150 104 200 — 16804/23/2006 — — — nr — — — — — —09/14/2006 — 100 100 123 100 100 95.9 100 — —02/17/2007 — 66.7 87.9 110 109 100 86.1 100 — —05/24/2007 — 150 115 146 75.0 100 94.1 100 — —05/30/2008 — 100 129 — 204 50.0 92.3 83.3 — 206

09/27/2008 — 100 122 — — 100 121 76.9 — nr

12/20/2008 100 150 129 109 100 50.0 89.2 111 88.4 46.3
142 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B1C. Quality-control replicate comparison for medium/low-volatility volatile organic compounds (VOCs) detected in air samples, processed at the Oregon Graduate Institute, from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Values are given in percent of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level] Date (mm/dd/yyyy) Chlorobenzene Ethylbenzene

m and 

pXylene Bromoform (tribromomethane) Ethenylbenzene (styrene) o-Xylene Isopropylbenzene (cumene)

npropylbenzene 1,3,5- Trimethylbenzene 2- Ethyltoluene

11/29/2003 75.0 109 89.4

— 120 105 100 66.7 100 117

12/11/2003

— 136 97.8

— 167 87.8 100 nr 83.3 nr

02/03/2005 46.2 117 115

— 50.0 133 40.0 100 100 150

01/29/2006 100 100 109

— 150 114 100 125 138 133

04/23/2006

—

—

—

—

—

—

—

—

—

—

09/14/2006 100 125 127

—

— 125 100 100 100 100

02/17/2007 100 100 83.9

— 75.0 100 89.9 83.9 92.9 83.3

05/24/2007 100 125 100

— 117 125 75.0 75.0 90.9 90.0

05/30/2008

— 140 129

—

— 133 133 120 100 114

09/27/2008

— 114 124

— 100 122 133 112 153 115

12/20/2008

— 85.7 75.0 147 100 86.7 170 80.0 83.9 71.9

Table B1C. Quality-control replicate comparison for medium/low-volatility volatile organic compounds (VOCs) detected in air samples, processed at the Oregon Graduate Institute, from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Values are given in percent of environmental sample [(replicate concentration/environmental concentration)*100]. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above laboratory reporting level]

Date 

(mm/dd/yyyy)

1,2,4-

Trimethylbenzene sec- Butylbenzene 1,4- Dichloro- benzene 1-Isopropyl- 4-methylbenzene 1,2,3- Trimethyl- benzene

nButylbenzene 1,2,4,5- Tetramethyl- benzene 1,2,3,5- Tetramethyl- benzene 1,2,3,4- Tetramethyl- benzene 1,2,4- Trichloro- benzene Naphthalene

11/29/2003 98.1 125 80.0 100 71.4 50.0 50.0 100 125 100 79.6

12/11/2003 150 100 133 25.0 125 100 100 200 100 100 100

02/03/2005 150

— 100 50.0 100 75.0 40.0 30.0 20.0 100 100

01/29/2006 140 100 100 150 100 100 100 100 100 100 133

04/23/2006

—

—

—

—

—

—

—

—

—

—

—

09/14/2006 133

— 100 100 100 100 100 100 100 100 100

02/17/2007 84.6 100 62.5 90.5 90.5 80.0 109 121 83.6 100 90.4

05/24/2007 84.6

— 90.9 91.7 90.0 100 100 75.0 100 100 150

05/30/2008 116

— 162 85.7 117 66.7 75.0 100 100 100 88.9

09/27/2008 152

— 117 121 119 150 100 80.0 100 100 118

12/20/2008 64.0 125 108 70.6 96.2 71.4 66.7 138 160 100 106
Appendix 143

Table B2A. Quality-control travel spike results for high-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate 

Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

[The site-identification number is 324141117001601. Values are given in percentage recovery. Sample volume for quality-assurance spike is 1.5 liters. 

Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed]

Sample 

date

(mm/dd/yyyy) 

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number Chloromethane Chloroethene (vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

11/29/2003 12/18/2003 Y16058 74.3 72.3 NA 76.2 89.4

12/23/2003 01/29/2004 Y16119 94.3 70.5 NA 77.6 88.8

01/14/2004 02/06/2004 Y05951 74.9 81.5 NA 85.9 85.6

04/09/2004 04/16/2004 Y16133 81.5 87.2 NA 83.8 99.9

04/21/2004 05/06/2004 Y16137 113 94.1 NA 71.4 98.9

07/26/2004 08/25/2004 Y12889 78.0 96.5 NA 72.2 101

01/22/2005 02/10/2005 Y15939 124 72.1 NA 77.0 97.9

02/15/2005 03/03/2005 Y12858 76.1 75.1 NA 78.8 82.6

03/11/2005 03/30/2005 Y14520 90.9 95.7 NA 69.3 98.8

05/10/2005 05/17/2005 Y16058 86.5 85.6 NA 74.2 86.9

06/03/2005 06/20/2005 Y16058 78.2 75.6 NA 65.1 90.9

08/02/2005 08/17/2005 Y16133 132 68.7 NA 71.3 83.0

09/19/2005 10/05/2005 Y06586 78.4 98.4 NA 79.1 97.1

10/13/2005 11/02/2005 Y15161 90.2 65.1 NA 73.0 74.3

01/29/2006 02/15/2006 Y16096 79.3 72.7 NA 71.4 79.0

02/22/2006 03/09/2006 Y12858 70.6 95.1 NA 70.5 109

04/23/2006 05/11/2006 Y16128 90.7 105 NA 81.6 111

09/14/2006 10/02/2006 Y05908 83.2 93.6 NA 72.0 108

10/08/2006 10/25/2006 Y12870 60.2 89.3 NA 61.8 102

02/17/2007 03/08/2007 Y05908 63.8 74.4 NA 78.5 83.4

04/30/2007 05/16/2007 Y16139 69.9 76.8 NA 65.4 83.8

05/24/2007 06/14/2007 Y16099 81.4 78.3 NA 71.7 85.1

08/16/2007 09/05/2007 Y16119 75.4 79.5 NA 72.0 90.9

10/15/2007 10/19/2007 Y05868 94.5 91.6 NA 59.8 101

11/20/2007 12/06/2007 Y16139 96.2 87.0 NA 78.6 99.8

01/07/2008 01/23/2008 Y15989 81.6 71.1 NA 92.1 94.9

01/31/2008 02/19/2008 Y05161 83.0 91.3 NA 61.4 109

02/24/2008 03/13/2008 Y05908 68.6 87.7 NA 65.7 101

03/19/2008 04/03/2008 Y11977 111 76.1 NA 99.1 88.4

04/24/2008 04/30/2008 Y12883 67.4 67.1 NA 74.7 74.3

05/30/2008 06/18/2008 Y05908 70.2 75.4 NA 70.9 72.7

08/10/2008 08/28/2008 Y05161 92.4 71.6 NA 61.8 90.5

09/27/2008 10/16/2008 Y16119 64.6 74.7 NA 79.0 84.6

12/20/2008 12/31/2008 Y12874 63.9 85.1 NA 74.8 90.2

02/18/2009 03/04/2009 Y05951 73.0 72.1 NA 65.4 84.9

04/07/2009 04/23/2009 Y16052 78.4 91.6 NA 67.6 94.7

05/25/2009 06/11/2009 Y15939 86.4 65.8 NA 71.4 76.7
144 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B2B. Quality-control analytical travel blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

travel blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or 

having a higher degree of uncertainty; NA, not analyzed; mm/dd/yyyy, month/day/year; mm of Hg, millimeters of mercury; LRL, laboratory reporting level; 

°C, degree Celsius; —, compound was not detected at a concentration above laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analyzed 

date 

(mm/dd/yyyy)

Cartridge 

number 

Pressure 

(mm of Hg) 

Temperature 

(°C) 

ChloromethaneChloroethene 

(vinyl chloride) 

Bromomethane Chloroethane Bromoethene 

(vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

09/18/2003 10/16/2003 Y05951 759.9 19.6 — — — — —

10/12/2003 10/16/2003 Y16119 759.7 20.7 — — — — —

10/24/2003 11/21/2003 Y12877 759.0 18.2 — — — — —

11/05/2003 11/21/2003 Y05951 761.7 12.7 — — — — —

11/17/2003 11/21/2003 Y16137 763.0 13.3 — — — — —

11/29/2003 12/18/2003 Y12851 761.9 15.0 — — — — —

12/11/2003 12/18/2003 Y12874 761.6 12.0 — — — — —

12/23/2003 01/29/2004 Y16133 760.7 15.4 — — — — —

01/04/2004 01/29/2004 Y16138 764.9 9.48 — — — — —

01/14/2004 02/06/2004 Y12877 758.0 12.9 — — — — —

01/28/2004 02/06/2004 Y05161 763.5 12.3 — — — — —

02/09/2004 02/27/2004 Y16099 762.5 12.4 — — — — —

02/21/2004 02/27/2004 Y12841 757.9 11.7 — — — — —

03/04/2004 03/26/2004 Y15939 758.8 13.8 — — — — —

03/16/2004 03/26/2004 Y04934 760.6 15.0 — — — — —

03/28/2004 04/16/2004 Y10662 760.2 20.8 — — — — —

04/09/2004 04/16/2004 Y16058 760.3 16.6 — — — — —

04/21/2004 05/06/2004 Y16133 760.8 16.0 — — — — —

05/03/2004 05/06/2004 Y12870 758.1 18.2 — — — — —

05/15/2004 06/04/2004 Y16139 757.5 18.2 — — — — —

05/27/2004 06/04/2004 Y05908 761.2 17.5 — — — — —

06/08/2004 06/28/2004 Y12867 757.3 17.1 — — — — —

06/20/2004 06/28/2004 Y10658 760.7 19.2 — — — — —

07/02/2004 07/21/2004 Y12870 761.7 18.9 — — — — —

07/14/2004 07/21/2004 Y16133 759.7 22.9 — — — — —

07/26/2004 08/25/2004 Y12861 758.9 21.2 — — — — —

08/19/2004 08/25/2004 Y16099 759.9 20.7 — — — — —

08/31/2004 09/21/2004 Y15987 759.1 22.2 — — — — —

09/12/2004 09/21/2004 Y16137 757.7 22.5 — — — — —

09/23/2004 10/13/2004 Y16058 759.2 22.1 — — — — —

10/06/2004 10/13/2004 Y05161 759.0 17.9 — — — — —

10/18/2004 11/10/2004 Y16099 758.9 18.7 — — — — —

10/30/2004 11/10/2004 Y16133 761.7 15.0 — — — — —

11/23/2004 12/08/2004 Y12883 763.3 11.2 — — — — —

12/05/2004 12/08/2004 Y16133 754.7 10.5 — — — — —

12/28/2004 01/20/2005 Y12883 758.4 13.4 — — — — —

01/10/2005 01/20/2005 Y15939 762.2 15.3 — — — — —

01/22/2005 02/10/2005 Y12870 762.3 13.6 — — — — —

02/03/2005 02/10/2005 Y16096 762.4 15.7 — — — — —

02/15/2005 03/03/2005 Y05868 762.4 12.8 — — — — —

02/27/2005 03/03/2005 Y05908 764.0 14.0 — — — — —

03/11/2005 03/30/2005 Y16137 760.6 15.0 — — — — —

Table B2B. Quality-control analytical travel blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
Appendix 145

Table B2B. Quality-control analytical travel blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

travel blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or 

having a higher degree of uncertainty; NA, not analyzed; mm/dd/yyyy, month/day/year; mm of Hg, millimeters of mercury; LRL, laboratory reporting level; 

°C, degree Celsius; —, compound was not detected at a concentration above laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analyzed 

date 

(mm/dd/yyyy)

Cartridge 

number 

Pressure 

(mm of Hg) 

Temperature 

(°C) 

ChloromethaneChloroethene 

(vinyl chloride) 

Bromomethane Chloroethane Bromoethene 

(vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

03/23/2005 03/30/2005 Y16139 760.0 13.5 — — — — —

04/04/2005 04/20/2005 Y12889 762.7 14.0 — — — — —

04/16/2005 04/20/2005 Y12874 759.3 16.0 — — — — —

04/28/2005 05/17/2005 Y16139 762.0 15.1 — — — — —

05/10/2005 05/17/2005 Y12889 759.9 16.0 — — — — —

06/03/2005 06/20/2005 Y05161 756.7 18.2 — — — — —

06/15/2005 06/20/2005 Y15939 758.1 17.8 — — — — —

07/09/2005 07/28/2005 Y16139 759.2 18.7 — — — — —

07/25/2005 07/28/2005 Y12889 757.0 25.4 — — — — —

08/02/2005 08/17/2005 Y15939 758.9 20.6 — — — — —

08/14/2005 08/17/2005 Y16058 757.9 19.4 — — — — —

08/26/2005 09/14/2005 Y12841 759.3 25.9 — — — — —

09/07/2005 09/14/2005 Y06012 758.9 20.3 — — — — —

09/19/2005 10/05/2005 Y16133 760.1 19.2 — — — — —

10/01/2005 10/05/2005 Y12858 756.7 20.5 — — — — —

10/13/2005 11/02/2005 Y12883 759.5 20.3 — — — — —

10/25/2005 11/02/2005 Y12874 763.4 16.4 — — — — —

11/06/2005 11/29/2005 Y12889 759.0 15.0 — — — — —

11/18/2005 11/29/2005 Y15939 762.4 20.2 — — — — —

12/12/2005 01/04/2006 Y16099 762.7 12.3 — — — — —

12/24/2005 01/04/2006 Y15939 762.8 13.3 — — — — —

01/06/2006 01/24/2006 Y16137 765.0 18.1 — — — — —

01/17/2006 01/24/2006 Y16099 768.0 11.8 — — — — —

01/29/2006 02/15/2006 Y12874 765.2 11.5 — — — — —

02/10/2006 02/15/2006 Y16137 764.0 12.9 — — — — —

02/22/2006 03/09/2006 Y12861 763.3 11.2 NA NA NA NA NA

03/05/2006 03/09/2006 Y16128 764.7 13.2 — — — — —

03/30/2006 04/13/2006 Y12883 761.8 13.4 — — — — —

04/11/2006 04/13/2006 Y16119 760.8 15.6 — — — — —

04/23/2006 05/11/2006 Y06011 762.2 13.4 — — — — —

05/05/2006 05/11/2006 Y12858 761.1 15.7 — — — — —

06/10/2006 07/12/2006 Y16119 757.5 17.8 — — — — —

06/22/2006 07/12/2006 Y16096 760.2 19.7 — — — — —

07/04/2006 07/12/2006 Y12841 760.7 21.9 — — — — —

07/28/2006 08/14/2006 Y16096 759.6 25.1 — — — — —

08/09/2006 08/14/2006 Y12841 758.4 23.8 — — — — —

08/21/2006 09/08/2006 Y12874 758.5 21.7 — — — — —

09/02/2006 09/08/2006 Y16119 755.5 23.2 — — — — —

09/14/2006 10/02/2006 Y16139 756.1 18.8 — — — — —

09/26/2006 10/02/2006 Y12874 761.0 19.3 — — — — —

10/08/2006 10/25/2006 Y06313 759.4 16.5 — — — — —

10/20/2006 10/25/2006 Y16119 756.8 19.4 — — — — —
146 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B2B. Quality-control analytical travel blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

travel blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or 

having a higher degree of uncertainty; NA, not analyzed; mm/dd/yyyy, month/day/year; mm of Hg, millimeters of mercury; LRL, laboratory reporting level; 

°C, degree Celsius; —, compound was not detected at a concentration above laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analyzed 

date 

(mm/dd/yyyy)

Cartridge 

number 

Pressure 

(mm of Hg) 

Temperature 

(°C) 

ChloromethaneChloroethene 

(vinyl chloride) 

Bromomethane Chloroethane Bromoethene 

(vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

11/01/2006 11/17/2006 Y05161 761.6 16.5 — — — — —

11/13/2006 11/17/2006 Y16096 715.9 16.9 — — — — —

11/25/2006 12/15/2006 Y06011 706.9 14.5 — — — — —

12/07/2006 12/15/2006 Y14520 762.7 15.7 — — — — —

12/31/2006 01/19/2007 Y12858 765.7 10.1 — — — — —

01/12/2007 01/19/2007 Y15936 760.5 9.4 — — — — —

01/24/2007 02/07/2007 Y15939 764.2 13.4 — — — — —

02/05/2007 02/07/2007 Y12867 763.2 17.3 — — — — —

02/17/2007 03/08/2007 Y16058 761.7 19.1 — — — — —

03/01/2007 03/08/2007 Y12870 763.3 9.9 — — — — —

03/13/2007 03/29/2007 Y16119 761.4 16.2 — — — — —

03/25/2007 03/29/2007 Y16139 763.0 15.5 — — — — —

04/06/2007 05/01/2007 Y05951 758.9 14.9 — — — — —

04/18/2007 05/01/2007 Y12874 761.6 14.1 — — — — —

04/30/2007 05/16/2007 Y16133 759.8 16.6 — — — — —

05/12/2007 05/16/2007 Y15939 761.1 15.5 — — — — —

05/24/2007 06/14/2007 Y05161 759.0 17.3 — — — — —

06/05/2007 06/14/2007 Y16119 759.0 16.4 — — — — —

06/17/2007 07/11/2007 Y12870 758.2 18.0 — — — — —

06/29/2007 07/11/2007 Y12874 758.9 19.8 — — — — —

07/11/2007 07/13/2007 Y16052 745.0 20.8 — — — — —

07/23/2007 08/09/2007 Y16133 758.3 20.9 — — — — —

08/04/2007 08/09/2007 Y16058 701.1 20.7 — — — — —

08/16/2007 09/05/2007 Y05161 699.5 22.9 — — — — —

08/28/2007 09/05/2007 Y16099 756.0 24.6 — — — — —

09/09/2007 10/02/2007 Y14520 758.7 20.6 — — — — —

09/21/2007 10/02/2007 Y16134 757.6 17.4 — — — — —

10/03/2007 10/19/2007 Y12870 758.3 20.7 — — — — —

10/15/2007 10/19/2007 Y05951 758.0 17.1 — — — — —

10/27/2007 11/13/2007 Y16099 762.5 20.3 — — — — —

11/08/2007 11/13/2007 Y16052 761.9 15.2 — — — — —

11/20/2007 12/06/2007 Y12867 759.9 13.2 — — — — —

12/02/2007 12/06/2007 Y12870 769.0 11.3 — — — — —

12/14/2007 01/03/2008 Y16134 765.5 10.2 — — — — —

12/26/2007 01/03/2008 Y16052 762.4 9.71 — — — — —

01/07/2008 01/23/2008 Y12841 760.1 12.0 — — — — —

01/19/2008 01/23/2008 Y16119 707.0 10.7 — — — — —

01/31/2008 02/19/2008 Y16134 766.8 10.9 — — — — —

02/12/2008 02/19/2008 Y12841 710.6 16.0 — — — — —

02/24/2008 03/13/2008 Y12883 716.2 12.2 — — — — —

03/07/2008 03/13/2008 Y05161 706.1 15.9 — — — — —

03/19/2008 04/03/2008 Y12867 763.9 12.8 — — — — —
Appendix 147

Table B2B. Quality-control analytical travel blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

travel blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or 

having a higher degree of uncertainty; NA, not analyzed; mm/dd/yyyy, month/day/year; mm of Hg, millimeters of mercury; LRL, laboratory reporting level; 

°C, degree Celsius; —, compound was not detected at a concentration above laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analyzed 

date 

(mm/dd/yyyy)

Cartridge 

number 

Pressure 

(mm of Hg) 

Temperature 

(°C) 

ChloromethaneChloroethene 

(vinyl chloride) 

Bromomethane Chloroethane Bromoethene 

(vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

03/31/2008 04/03/2008 Y16058 763.3 12.3 — — — — —

04/12/2008 04/30/2008 Y05868 708.7 22.8 — — — — —

04/24/2008 04/30/2008 Y16139 705.5 15.2 — — — — —

05/06/2008 05/22/2008 Y05951 704.8 13.8 — — — — —

05/18/2008 05/22/2008 Y15989 699.5 24.1 — — — — —

05/30/2008 06/18/2008 Y16099 703.2 17.2 — — — — —

06/11/2008 06/18/2008 Y12841 701.3 17.1 — — — — —

06/23/2008 07/14/2008 Y16119 700.3 21.8 — — — — —

07/05/2008 07/14/2008 Y05016 702.1 20.8 — — — — —

07/17/2008 08/14/2008 Y15939 704.2 20.7 — — — — —

07/29/2008 08/14/2008 Y14520 705.3 21.4 — — — — —

08/10/2008 08/28/2008 Y16096 704.8 22.4 — — — — —

08/22/2008 08/28/2008 Y12889 703.9 20.7 — — — — —

09/03/2008 09/18/2008 Y16134 702.3 23.1 — — — — —

09/15/2008 09/18/2008 Y12870 709.2 21.9 — — — — —

09/27/2008 10/16/2008 Y05868 719.1 20.9 — — — — —

10/09/2008 10/16/2008 Y16139 704.0 18.7 — — — — —

10/21/2008 11/06/2008 Y14520 761.5 16.6 — — — — —

11/02/2008 11/06/2008 Y12867 763.3 17.5 — — — — —

11/14/2008 12/10/2008 Y05016 760.0 21.3 — — — — —

11/26/2008 12/10/2008 Y12867 758.5 16.2 — — — — —

12/08/2008 12/31/2008 Y05908 765.3 13.3 — — — — —

12/20/2008 12/31/2008 Y13939 766.1 9.2 — — — — —

01/01/2009 01/21/2009 Y05016 762.0 11.4 — — — — —

01/13/2009 01/21/2009 Y16058 765.3 17.8 — — — — —

01/25/2009 02/11/2009 Y15936 762.8 11.6 — — — — —

02/06/2009 02/11/2009 Y16119 761.0 13.2 — — — — —

02/18/2009 03/04/2009 Y16058 766.3 11.0 — — — — —

03/02/2009 03/04/2009 Y12889 763.0 18.3 — — — — —

03/14/2009 04/01/2009 Y14520 759.5 12.9 — — — — —

03/26/2009 04/01/2009 Y16134 759.0 12.7 — — — — —

04/07/2009 04/23/2009 Y15936 762.5 13.7 — — — — —

04/19/2009 04/23/2009 Y12841 760.5 25.2 — — — — —

05/01/2009 05/21/2009 Y16058 761.8 16.9 — — — — —

05/13/2009 05/21/2009 Y05951 758.3 16.6 — — — — —

05/25/2009 06/11/2009 Y16096 759.7 16.0 — — — — —

06/06/2009 06/11/2009 Y16139 760.5 17.1 — — — — —

06/18/2009 07/09/2009 Y12883 756.7 17.9 — — — — —

06/30/2009 07/09/2009 Y12874 757.3 20.8 — — — — —

07/12/2009 07/29/2009 Y05868 760.2 24.8 — — — — —

07/24/2009 07/29/2009 Y15939 759.0 16.7 — — — — —
148 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B2C. Quality-control analytical lot blank results for high-volatility volatile organic compounds (VOCs) processed at the Oregon 

Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

lot-blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Samples processed at 20.0 degrees 

Celsius and 760 millimeters of mercury. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound 

was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Sample

 date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

10/12/2003 10/16/2003 Y12883 — — — — —

10/24/2003 11/21/2003 Y12861 — — — — —

11/05/2003 11/21/2003 Y16138 — — — — —

11/17/2003 11/21/2003 Y12851 — — — — —

11/29/2003 12/18/2003 Y16138 — — — — —

12/11/2003 12/18/2003 Y16096 — — — — —

12/23/2003 01/29/2004 Y12883 — — — — —

01/04/2004 01/29/2004 Y16128 — — — — —

01/14/2004 02/06/2004 Y12874 — — — — —

01/28/2004 02/06/2004 Y12867 — — — — —

02/09/2004 02/27/2004 Y06012 — — — — —

02/21/2004 02/27/2004 Y12870 — — — — —

03/04/2004 03/26/2004 Y12858 — — — — —

03/16/2004 03/26/2004 Y16119 — — — — —

03/28/2004 04/16/2004 Y16128 — — — — —

04/09/2004 04/16/2004 Y12858 — — — — —

04/21/2004 05/06/2004 Y15939 — — — — —

05/03/2004 05/06/2004 Y12874 — — — — —

05/15/2004 06/04/2004 Y16113 — — — — —

05/27/2004 06/04/2004 Y05951 — — — — —

06/08/2004 06/28/2004 Y10662 — — — — —

06/20/2004 06/28/2004 Y12858 — — — — —

07/02/2004 07/21/2004 Y12861 — — — — —

07/14/2004 07/21/2004 Y12858 — — — — —

07/26/2004 08/25/2004 Y05951 — — — — —

08/19/2004 08/25/2004 Y16128 — — — — —

08/31/2004 09/21/2004 Y16133 — — — — —

09/12/2004 09/21/2004 Y16139 — — — — —

09/23/2004 10/13/2004 Y12874 — — — — —

10/06/2004 10/13/2004 Y15936 — — — — —

10/18/2004 11/10/2004 Y16119 — — — — —

10/30/2004 11/10/2004 Y06012 — — — — —

11/23/2004 12/08/2004 Y05161 — — — — —

12/05/2004 12/08/2004 Y12867 — — — — —

12/28/2004 01/20/2005 Y12889 — — — — —

01/10/2005 01/20/2005 Y16119 — — — — —

01/22/2005 02/10/2005 Y12877 — — — — —

02/03/2005 02/10/2005 Y05908 — — — — —

02/15/2005 03/03/2005 Y05161 — — — — —

02/27/2005 03/03/2005 Y16133 — — — — —

03/11/2005 03/30/2005 Y15936 — — — — —

03/23/2005 03/30/2005 Y16058 — — — — —

Table B2C. Quality-control analytical lot blank results for high-volatility volatile organic compounds (VOCs) processed at the Oregon 

Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
Appendix 149

Table B2C. Quality-control analytical lot blank results for high-volatility volatile organic compounds (VOCs) processed at the Oregon 

Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

lot-blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Samples processed at 20.0 degrees 

Celsius and 760 millimeters of mercury. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound 

was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Sample

 date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

04/04/2005 04/20/2005 Y15987 — — — — —

04/16/2005 04/20/2005 Y12870 — — — — —

04/28/2005 05/17/2005 Y14520 — — — — —

05/10/2005 05/17/2005 Y11968 — — — — —

06/03/2005 06/20/2005 Y05908 — — — — —

06/15/2005 06/20/2005 Y06012 — — — — —

07/09/2005 07/28/2005 Y16096 — — — — —

07/25/2005 07/28/2005 Y16096 — — — — —

08/02/2005 08/17/2005 Y06012 — — — — —

08/14/2005 08/17/2005 Y12894 — — — — —

08/26/2005 09/14/2005 Y12883 — — — — —

09/07/2005 09/14/2005 Y12861 — — — — —

09/19/2005 10/05/2005 Y16128 — — — — —

10/01/2005 10/05/2005 Y12861 — — — — —

10/13/2005 11/02/2005 Y16137 — — — — —

10/25/2005 11/02/2005 Y05951 — — — — —

11/06/2005 11/29/2005 Y04283 — — — — —

11/18/2005 11/29/2005 Y05868 — — — — —

12/12/2005 01/04/2006 Y12858 — — — — —

12/24/2005 01/04/2006 Y16119 — — — — —

01/06/2006 01/24/2006 Y12867 — — — — —

01/17/2006 01/24/2006 Y16539 — — — — —

01/29/2006 02/15/2006 Y16119 — — — — —

02/10/2006 02/15/2006 Y15936 — — — — —

02/22/2006 03/09/2006 Y05868 — — — — —

03/05/2006 03/09/2006 Y16133 — — — — —

03/30/2006 04/13/2006 Y05161 — — — — —

04/11/2006 04/13/2006 Y12870 — — — — —

04/23/2006 05/11/2006 Y15936 — — — — —

05/05/2006 05/11/2006 Y16099 — — — — —

06/10/2006 07/12/2006 Y16058 — — — — —

06/22/2006 07/12/2006 Y16133 — — — — —

07/04/2006 07/12/2006 Y16099 — — — — —

07/28/2006 08/14/2006 Y12858 — — — — —

08/09/2006 08/14/2006 Y11458 — — — — —

08/21/2006 09/08/2006 Y16058 — — — — —

09/02/2006 09/08/2006 Y12870 — — — — —

09/14/2006 10/02/2006 Y12867 — — — — —

09/26/2006 10/02/2006 Y12858 — — — — —

10/08/2006 10/25/2006 Y12841 — — — — —

10/20/2006 10/25/2006 Y15939 — — — — —

11/01/2006 11/17/2006 Y08484 — — — — —
150 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B2C. Quality-control analytical lot blank results for high-volatility volatile organic compounds (VOCs) processed at the Oregon 

Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

lot-blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Samples processed at 20.0 degrees 

Celsius and 760 millimeters of mercury. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound 

was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Sample

 date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

11/13/2006 11/17/2006 Y08484 — — — — —

11/25/2006 12/15/2006 Y05161 — — — — —

12/07/2006 12/15/2006 Y12874 — — — — —

12/31/2006 01/19/2007 Y12867 — — — — —

01/12/2007 01/19/2007 Y12870 — — — — —

01/24/2007 02/07/2007 Y05908 — — — — —

02/05/2007 02/07/2007 Y16058 — — — — —

02/17/2007 03/08/2007 Y05951 — — — — —

03/01/2007 03/08/2007 Y16099 — — — — —

03/13/2007 03/29/2007 Y12889 — — — — —

03/25/2007 03/29/2007 Y05868 — — — — —

04/06/2007 05/01/2007 Y14520 — — — — —

04/18/2007 05/01/2007 Y15989 — — — — —

04/30/2007 05/16/2007 Y12883 — — — — —

05/12/2007 05/16/2007 Y12841 — — — — —

05/24/2007 06/14/2007 Y16046 — — — — —

06/05/2007 06/14/2007 Y15939 — — — — —

06/17/2007 07/11/2007 Y16113 — — — — —

06/29/2007 07/11/2007 Y16134 — — — — —

07/11/2007 07/13/2007 Y12889 — — — — —

07/23/2007 08/09/2007 Y05908 — — — — —

08/04/2007 08/09/2007 Y12874 — — — — —

08/16/2007 09/05/2007 Y12867 — — — — —

08/28/2007 09/05/2007 Y16139 — — — — —

09/09/2007 10/02/2007 Y05951 — — — — —

09/21/2007 10/02/2007 Y16099 — — — — —

10/03/2007 10/19/2007 Y16052 — — — — —

10/15/2007 10/19/2007 Y16052 — — — — —

10/27/2007 11/13/2007 Y12889 — — — — —

11/08/2007 11/13/2007 Y12841 — — — — —

11/20/2007 10/02/2006 Y15939 — — — — —

12/02/2007 12/06/2007 Y05868 — — — — —

12/14/2007 01/03/2008 Y12874 — — — — —

12/26/2007 01/03/2008 Y16139 — — — — —

01/07/2008 01/23/2008 Y05868 — — — — —

01/19/2008 01/23/2008 Y12870 — — — — —

01/31/2008 02/19/2008 Y15936 — — — — —

02/12/2008 02/19/2008 Y12889 — — — — —

02/24/2008 03/13/2008 Y12089 — — — — —

03/07/2008 03/13/2008 Y12874 — — — — —

03/19/2008 04/03/2008 Y16139 — — — — —
Appendix 151

Table B2C. Quality-control analytical lot blank results for high-volatility volatile organic compounds (VOCs) processed at the Oregon 

Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance 

lot-blank is 1.5 liters. Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Samples processed at 20.0 degrees 

Celsius and 760 millimeters of mercury. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound 

was not detected at a concentration above laboratory reporting level; LRL, laboratory reporting level]

Sample

 date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

03/31/2008 04/03/2008 Y05016 — — — — —

04/12/2008 04/30/2008 Y05908 — — — — —

04/24/2008 04/30/2008 Y16099 — — — — —

05/06/2008 05/22/2008 Y15989 — — — — —

05/18/2008 05/22/2008 Y05161 — — — — —

05/30/2008 06/18/2008 Y15936 — — — — —

06/01/2008 06/18/2008 Y12867 — — — — —

06/23/2008 07/14/2008 Y26208 — — — — —

07/05/2008 07/14/2008 Y05868 — — — — —

07/17/2008 08/14/2008 Y12874 — — — — —

07/29/2008 08/14/2008 Y12874 — — — — —

08/10/2008 08/28/2008 Y12841 — — — — —

08/22/2008 08/28/2008 Y16119 — — — — —

09/03/2008 09/18/2008 Y12867 — — — — —

09/15/2008 09/18/2008 Y12883 — — — — —

09/27/2008 10/16/2008 Y16096 — — — — —

10/09/2008 10/16/2008 Y05908 — — — — —

10/21/2008 11/06/2008 Y12867 — — — — —

11/02/2008 11/06/2008 Y12870 — — — — —

11/14/2008 12/10/2008 Y12874 — — — — —

11/26/2008 12/10/2008 Y12841 — — — — —

12/08/2008 12/31/2008 Y16134 — — — — —

12/20/2008 12/31/2008 Y12867 — — — — —

01/01/2009 01/21/2009 Y15989 — — — — —

01/13/2009 01/21/2009 Y12874 — — — — —

01/25/2009 02/11/2009 Y05868 — — — — —

02/06/2009 02/11/2009 Y26208 — — — — —

02/18/2009 03/04/2009 Y12874 — — — — —

03/02/2009 03/04/2009 Y15936 — — — — —

03/14/2009 04/01/2009 Y05951 — — — — —

03/26/2009 04/01/2009 Y12870 — — — — —

04/07/2009 04/23/2009 Y05161 — — — — —

04/19/2009 04/23/2009 Y16058 — — — — —

05/01/2009 05/21/2009 Y12870 — — — — —

05/13/2009 05/21/2009 Y16119 — — — — —

05/25/2009 06/11/2009 Y15989 — — — — —

06/06/2009 06/11/2009 Y15989 — — — — —

06/18/2009 07/09/2009 Y05951 — — — — —

06/30/2009 07/09/2009 Y15939 — — — — —

07/12/2009 07/29/2009 Y16139 — — — — —

07/24/2009 07/29/2009 Y12870 — — — — —
152 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B2D. Quality-control analytical laboratory blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance labblank is 1.5 liters. Samples processed at 20.0 degrees Celsius and 760 millimeters of mercury. Pairs of samples analyzed on the same date had been frozen and 

stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; —, not detected at a concentration above laboratory 

reporting level; LRL, laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

10/12/2003 10/16/2003 Y12874 — — — — —

10/24/2003 11/21/2003 Y15987 — — — — —

11/05/2003 11/21/2003 Y06012 — — — — —

11/17/2003 11/21/2003 Y15939 — — — — —

11/29/2003 12/18/2003 Y05868 — — — — —

12/11/2003 12/18/2003 Y05951 — — — — —

12/23/2003 01/29/2004 Y16137 — — — — —

01/04/2004 01/29/2004 Y06012 — — — — —

01/14/2004 02/06/2004 Y15987 — — — — —

01/28/2004 02/06/2004 Y16139 — — — — —

02/09/2004 02/27/2004 Y16119 — — — — —

02/21/2004 02/27/2004 Y05908 — — — — —

03/04/2004 03/26/2004 Y14520 — — — — —

03/16/2004 03/26/2004 Y12877 — — — — —

03/28/2004 04/16/2004 Y16099 — — — — —

04/09/2004 04/16/2004 Y06012 — — — — —

04/21/2004 05/06/2004 Y16128 — — — — —

05/03/2004 05/06/2004 Y06012 — — — — —

05/15/2004 06/04/2004 Y16128 — — — — —

05/27/2004 06/04/2004 Y12861 — — — — —

06/08/2004 06/28/2004 Y05951 — — — — —

06/20/2004 06/28/2004 Y12841 — — — — —

07/02/2004 07/21/2004 Y15939 — — — — —

07/14/2004 07/21/2004 Y06012 — — — — —

07/26/2004 08/25/2004 Y15936 — — — — —

08/19/2004 08/25/2004 Y05868 — — — — —

08/31/2004 09/21/2004 Y12858 — — — — —

09/12/2004 09/21/2004 Y12889 — — — — —

09/23/2004 10/13/2004 Y12870 — — — — —

10/06/2004 10/13/2004 Y12889 — — — — —

10/18/2004 11/10/2004 Y05951 — — — — —

10/30/2004 11/10/2004 Y12841 — — — — —

11/23/2004 12/08/2004 Y05868 — — — — —

12/05/2004 12/08/2004 Y12841 — — — — —

12/28/2004 01/20/2005 Y16058 — — — — —

01/10/2005 01/20/2005 Y12858 — — — — —

01/22/2005 02/10/2005 Y12870 — — — — —

02/03/2005 02/10/2005 Y06012 — — — — —

02/15/2005 03/03/2005 Y05161 — — — — —

02/27/2005 03/03/2005 Y15939 — — — — —

03/11/2005 03/30/2005 Y12861 — — — — —

03/23/2005 03/30/2005 Y05908 — — — — —

04/04/2005 04/20/2005 Y16133 — — — — —

Table B2D. Quality-control analytical laboratory blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
Appendix 153

Table B2D. Quality-control analytical laboratory blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance labblank is 1.5 liters. Samples processed at 20.0 degrees Celsius and 760 millimeters of mercury. Pairs of samples analyzed on the same date had been frozen and 

stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; —, not detected at a concentration above laboratory 

reporting level; LRL, laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

04/16/2005 04/20/2005 Y12877 — — — — —

04/28/2005 05/17/2005 Y12861 — — — — —

05/10/2005 05/17/2005 Y16128 — — — — —

06/03/2005 06/20/2005 Y12877 — — — — —

06/15/2005 06/20/2005 Y12841 — — — — —

07/09/2005 07/28/2005 Y15987 — — — — —

07/25/2005 07/28/2005 Y12877 — — — — —

08/02/2005 08/17/2005 Y05908 — — — — —

08/14/2005 08/17/2005 Y16128 — — — — —

08/26/2005 09/14/2005 Y15936 — — — — —

09/07/2005 09/14/2005 Y16139 — — — — —

09/19/2005 10/05/2005 Y15987 — — — — —

10/01/2005 10/05/2005 Y12889 — — — — —

10/13/2005 11/02/2005 Y12867 — — — — —

10/25/2005 11/02/2005 Y16139 — — — — —

11/06/2005 11/29/2005 Y04283 — — — — —

11/18/2005 11/29/2005 Y04283 — — — — —

12/12/2005 01/04/2006 Y12889 — — — — —

12/24/2005 01/04/2006 Y15987 — — — — —

01/06/2006 01/24/2006 Y16133 — — — — —

01/17/2006 01/24/2006 Y12858 — — — — —

01/29/2006 02/15/2006 Y12870 — — — — —

02/10/2006 02/15/2006 Y12889 — — — — —

02/22/2006 03/09/2006 Y12867 — — — — —

03/05/2006 03/09/2006 Y05161 — — — — —

03/30/2006 04/13/2006 Y16096 — — — — —

04/11/2006 04/13/2006 Y16139 — — — — —

04/23/2006 05/11/2006 Y05161 — — — — —

05/05/2006 05/11/2006 Y16058 — — — — —

06/10/2006 07/12/2006 Y14520 — — — — —

06/22/2006 07/12/2006 Y12883 — — — — —

07/04/2006 07/12/2006 Y16058 — — — — —

07/28/2006 08/14/2006 Y16137 — — — — —

08/09/2006 08/14/2006 Y06011 — — — — —

08/21/2006 09/08/2006 Y14520 — — — — —

09/02/2006 09/08/2006 Y16128 — — — — —

09/14/2006 10/02/2006 Y16058 — — — — —

09/26/2006 10/02/2006 Y12889 — — — — —

10/08/2006 10/25/2006 Y12889 — — — — —

10/20/2006 10/25/2006 Y16128 — — — — —

11/01/2006 11/17/2006 Y12889 — — — — —

11/13/2006 11/17/2006 Y12870 — — — — —

11/25/2006 12/15/2006 Y16133 — — — — —
154 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B2D. Quality-control analytical laboratory blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance labblank is 1.5 liters. Samples processed at 20.0 degrees Celsius and 760 millimeters of mercury. Pairs of samples analyzed on the same date had been frozen and 

stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; —, not detected at a concentration above laboratory 

reporting level; LRL, laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

12/07/2006 12/15/2006 Y16099 — — — — —

12/31/2006 01/19/2007 Y16058 — — — — —

01/12/2007 01/19/2007 Y11217 — — — — —

01/24/2007 02/07/2007 Y12883 — — — — —

02/05/2007 02/07/2007 Y16058 — — — — —

02/17/2007 03/08/2007 Y15989 — — — — —

03/01/2007 03/08/2007 Y12867 — — — — —

03/13/2007 03/29/2007 Y12841 — — — — —

03/25/2007 03/29/2007 Y12870 — — — — —

04/06/2007 05/01/2007 Y16099 — — — — —

04/18/2007 05/01/2007 Y16046 — — — — —

04/30/2007 05/16/2007 Y06011 — — — — —

05/12/2007 05/16/2007 Y12883 — — — — —

05/24/2007 06/14/2007 Y12874 — — — — —

06/05/2007 06/14/2007 Y16134 — — — — —

06/17/2007 07/11/2007 Y06011 — — — — —

06/29/2007 07/11/2007 Y14520 — — — — —

07/11/2007 07/13/2007 Y12841 — — — — —

07/23/2007 08/09/2007 Y12883 — — — — —

08/04/2007 08/09/2007 Y16099 — — — — —

08/16/2007 09/05/2007 Y11217 — — — — —

08/28/2007 09/05/2007 Y12841 — — — — —

09/09/2007 10/02/2007 Y05868 — — — — —

09/21/2007 10/02/2007 Y16058 — — — — —

10/03/2007 10/19/2007 Y12874 — — — — —

10/15/2007 10/19/2007 Y12883 — — — — —

10/27/2007 11/13/2007 Y16058 — — — — —

10/27/2007 11/13/2007 Y16058 — — — — —

11/08/2007 11/13/2007 Y12867 — — — — —

11/08/2007 11/13/2007 Y12867 — — — — —

11/20/2007 12/06/2007 Y05161 — — — — —

11/20/2007 12/06/2007 Y05161 — — — — —

12/02/2007 12/06/2007 Y16119 — — — — —

12/02/2007 12/06/2007 Y16119 — — — — —

12/14/2007 01/03/2008 Y05161 — — — — —

12/14/2007 01/03/2008 Y05161 — — — — —

12/26/2007 01/03/2008 Y15936 — — — — —

12/26/2007 01/03/2008 Y15936 — — — — —

01/07/2008 01/23/2008 Y12889 — — — — —

01/19/2008 01/23/2008 Y16099 — — — — —

01/31/2008 02/19/2008 Y16058 — — — — —

02/12/2008 02/19/2008 Y16052 — — — — —

02/24/2008 03/13/2008 Y05016 — — — — —
Appendix 155

Table B2D. Quality-control analytical laboratory blank results for high-volatility volatile organic compounds (VOCs) processed at the 

Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.

—Continued

[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Sample volume for quality-assurance labblank is 1.5 liters. Samples processed at 20.0 degrees Celsius and 760 millimeters of mercury. Pairs of samples analyzed on the same date had been frozen and 

stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; —, not detected at a concentration above laboratory 

reporting level; LRL, laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Analyzed 

date

(mm/dd/yyyy)

Cartridge 

number

Chloromethane Chloroethene 

(vinyl chloride) Bromomethane Chloroethane Bromoethene (vinyl bromide)

[LRL] [0.30] [0.30] [0.50] [0.30] [0.30]

03/07/2008 03/13/2008 Y16099 — — — — —

03/19/2008 04/03/2008 Y16096 — — — — —

03/31/2008 04/03/2008 Y05908 — — — — —

04/12/2008 04/30/2008 Y14520 — — — — —

04/24/2008 04/30/2008 Y12874 — — — — —

05/06/2008 05/22/2008 Y12867 — — — — —

05/18/2008 05/22/2008 Y16134 — — — — —

05/30/2008 06/18/2008 Y16139 — — — — —

06/01/2008 06/18/2008 Y16096 — — — — —

06/23/2008 07/14/2008 Y11185 — — — — —

07/05/2008 07/14/2008 Y05951 — — — — —

07/17/2008 08/14/2008 Y16658 — — — — —

07/29/2008 08/14/2008 Y15889 — — — — —

08/10/2008 08/28/2008 Y05016 — — — — —

08/22/2008 08/28/2008 Y16139 — — — — —

09/03/2008 09/18/2008 Y16058 — — — — —

09/15/2008 09/18/2008 Y14520 — — — — —

09/27/2008 10/16/2008 Y16052 — — — — —

10/09/2008 10/16/2008 Y15989 — — — — —

10/21/2008 11/06/2008 Y05161 — — — — —

11/02/2008 11/06/2008 Y05908 — — — — —

11/14/2008 12/10/2008 Y12883 — — — — —

11/26/2008 12/10/2008 Y16139 — — — — —

12/08/2008 12/31/2008 Y16058 — — — — —

12/20/2008 12/31/2008 Y12883 — — — — —

01/01/2009 01/21/2009 Y05951 — — — — —

01/13/2009 01/21/2009 Y05161 — — — — —

01/25/2009 02/11/2009 Y05908 — — — — —

02/06/2009 02/11/2009 Y05868 — — — — —

02/18/2009 03/04/2009 Y15939 — — — — —

03/02/2009 03/04/2009 Y16096 — — — — —

03/14/2009 04/01/2009 Y05016 — — — — —

03/26/2009 04/01/2009 Y12867 — — — — —

04/07/2009 04/23/2009 Y16119 — — — — —

04/19/2009 04/23/2009 Y05951 — — — — —

05/01/2009 05/21/2009 Y14520 — — — — —

05/13/2009 05/21/2009 Y16052 — — — — —

05/25/2009 06/11/2009 Y05016 — — — — —

06/06/2009 06/11/2009 Y16058 — — — — —

06/18/2009 07/09/2009 Y16096 — — — — —

06/30/2009 07/09/2009 Y14520 — — — — —

07/12/2009 07/29/2009 Y16134 — — — — —

07/24/2009 07/29/2009 Y12889 — — — — —
156 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California. [The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone Diethyl ether 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Methylene chloride Methylacetate 3-Chloro- 1-propene Carbon disulfide trans 1,2-Dichloroethene 11/29/2003 12/18/2003 Y12089 97.5 108 114 120 104 92.3 79.3 74.8 80.8 110 12/23/2003 01/29/2004 Y15630 117 104 109 67.2 102 111 75.0 76.7 121 107 01/14/2004 02/06/2004 Y11407 95.4 120 113 107 108 103 68.9 84.2 95.4 116 02/21/2004 02/27/2004 Y26371 115 78.5 102 77.0 79.3 99.2 68.1 79.7 87.1 93.5 04/09/2004 04/16/2004 Y26371 91.2 74.5 96.2 70.6 81.8 94.4 76.5 79.1 78.2 97.6 04/21/2004 05/06/2004 Y11241 124 83.5 94.0 128 72.1 102 119 99.9 73.6 93.2 07/26/2004 08/25/2004 Y11458 106 84.3 98.9 93.9 72.6 83.1 82.0 72.3 70.3 93.8 09/23/2004 10/13/2004 Y29357 82.0 114 122 104 75.2 121 74.7 71.8 103 119 02/15/2005 03/03/2005 Y29305 94.0 116 108 84.8 98.9 120 63.2 76.4 105 116 03/11/2005 03/30/2005 Y10925 78.9 96.5 108 83.8 117 87.5 79.4 73.3 99.7 99.5 05/10/2005 05/17/2005 Y11968 83.0 110 108 118 92.0 108 72.4 102 93.0 99.8 06/03/2005 06/20/2005 Y16392 43.1 106 113 78.2 70.3 92.5 74.0 104 89.3 94.9 08/02/2005 08/17/2005 Y26144 136 113 71.2 78.6 98.4 112 72.8 79.9 102 113 09/19/2005 10/05/2005 Y07567 75.2 104 124 123 90.0 84.3 112 94.8 80.1 104 10/13/2005 11/02/2005 Y08490 85.1 86.1 82.2 80.5 81.8 85.0 72.6 74.1 74.4 78.0 02/22/2006 03/09/2006 Y16229 83.1 100 85.1 72.4 98.8 100 63.6 70.8 96.2 98.5 04/23/2006 05/11/2006 Y29313 5.15 106 133 84.5 107 95.2 69.7 96.9 112 109 10/08/2006 10/25/2006 Y12870 133 130 82.9 126 111 116 117 85.2 116 107 02/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA 04/30/2007 05/16/2007 Y16139 98.4 95.2 130 82.2 102 110 67.5 73.9 104 114 05/24/2007 06/14/2007 Y16099 61.8 107 129 91.9 90.1 85.8 81.9 72.6 84.5 103 08/16/2007 09/05/2007 Y16119 91.2 94.1 121 83.5 86.7 95.9 98.1 83.0 91.2 96.3 10/15/2007 10/19/2007 Y05868 64.9 101 101 95.1 97.5 78.0 62.7 71.2 78.0 99.9 11/20/2007 12/06/2007 Y16139 NA 88.8 133 89.0 104 75.5 63.4 73.3 85.0 85.3 01/07/2008 01/23/2008 Y15989 98.1 86.8 85.7 126 108 79.1 85.8 62.1 66.8 78.1 01/31/2008 02/19/2008 Y05161 103 104 85.7 76.0 96.0 104 55.7 76.5 98.5 112 02/24/2008 03/13/2008 Y05908 78.0 92.4 79.4 97.0 95.6 83.2 77.0 79.7 88.4 91.8 03/19/2008 04/03/2008 Y11977 99.8 88.0 82.6 107 93.7 81.2 72.3 71.2 71.4 92.7 04/24/2008 04/30/2008 Y12883 64.3 102 125 80.9 86.6 95.2 119 83.4 108 103 05/30/2008 06/18/2008 Y05908 82.1 93.4 78.2 69.9 82.6 96.5 65.4 72.5 90.6 93.7 08/10/2008 08/28/2008 Y05161 89.4 85.7 79.9 103 92.0 96.4 95.1 67.7 93.1 87.9

09/27/2008 10/16/2008 Y16119 85.1 96.4 79.5 92.0 90.4 94.6 92.4 78.8 83.6 94.6

12/20/2008 12/31/2008 Y12874 72.3 98.8 79.5 128 113 98.6 108 80.9 95.6 108

02/18/2009 03/04/2009 Y05951 35.2 83.0 88.6 75.1 109 95.7 66.8 98.9 108 97.3

04/07/2009 04/23/2009 Y16052 54.7 113 107 103 123 94.9 73.9 66.1 117 102

05/25/2009 06/11/2009 Y15939 64.7 86.5 127 84.3 88.0 100 82.6 74.0 94.7 97.6
Appendix 157

Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Methyl tertbutyl ether 

(MTBE)

1,1- 

Dichloroethane

2-Butanone 

(methyl ethyl 

ketone)

Diisopropyl 

ether 

(DIPE)

Methyl 

acrylonitrile

cis-1,2-

Dichloroethene

Bromochloro 

methane

Trichloromethane 

(chloroform)

2,2-

Dichloropropene

Methyl 

acrylate

11/29/2003 12/18/2003 Y12089 104 103 84.8 105 120 118 89.9 109 75.2 88.5

12/23/2003 01/29/2004 Y15630 94.9 83.5 77.0 104 88.0 104 93.9 99.6 76.7 72.801/14/2004 02/06/2004 Y11407 117 107 90.1 118 121 115 89.1 118 74.6 91.602/21/2004 02/27/2004 Y26371 82.5 97.7 94.6 85.1 89.7 99.4 86.8 99.7 98.5 83.304/09/2004 04/16/2004 Y26371 72.8 84.9 76.9 78.7 85.3 93.7 98.4 93.2 71.0 72.604/21/2004 05/06/2004 Y11241 77.0 99.5 103 86.2 85.1 93.6 94.3 105 90.0 96.807/26/2004 08/25/2004 Y11458 89.3 94.4 92.5 91.1 87.9 93.8 94.9 99.9 93.1 93.409/23/2004 10/13/2004 Y29357 116 99.2 116 120 118 121 77.7 114 78.8 12202/15/2005 03/03/2005 Y29305 116 105 98.1 106 105 114 86.0 120 83.4 92.6

03/11/2005 03/30/2005 Y10925 71.4 91.4 78.3 113 131 101 101 90.2 62.9 82.2

05/10/2005 05/17/2005 Y11968 103 98.2 111 112 117 108 106 111 71.1 11006/03/2005 06/20/2005 Y16392 82.6 102 97.3 85.0 95.1 93.7 120 100 77.2 90.408/02/2005 08/17/2005 Y26144 97.4 118 106 115 108 116 94.1 127 83.8 10209/19/2005 10/05/2005 Y07567 93.8 111 82.3 99.1 96.8 105 99.0 122 80.3 10510/13/2005 11/02/2005 Y08490 72.5 72.1 69.3 83.4 86.0 86.3 79.1 97.4 67.6 83.102/22/2006 03/09/2006 Y16229 95.3 92.4 84.5 98.4 115 102 84.4 102 71.5 70.504/23/2006 05/11/2006 Y29313 85.0 111 105 103 105 109 101 110 73.5 88.410/08/2006 10/25/2006 Y12870 121 119 107 107 108 105 73.1 114 97.2 12702/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA04/30/2007 05/16/2007 Y16139 102 113 107 102 99.0 112 82.0 112 85.1 89.605/24/2007 06/14/2007 Y16099 101 85.1 89.5 96.8 89.4 111 87.3 103 80.8 81.808/16/2007 09/05/2007 Y16119 95.3 87.0 93.2 98.4 105 101 80.2 93.5 73.1 90.610/15/2007 10/19/2007 Y05868 96.0 89.9 91.9 97.7 97.5 98.9 85.9 94.8 75.6 87.3

11/20/2007 12/06/2007 Y16139 64.7 74.6 86.1 87.5 101 85.5 86.9 83.3 70.2 78.3

01/07/2008 01/23/2008 Y15989 99.6 75.4 79.9 96.5 112 77.8 72.3 73.4 82.2 92.901/31/2008 02/19/2008 Y05161 100 105 101 105 99.3 108 75.5 112 88.0 99.202/24/2008 03/13/2008 Y05908 112 88.8 80.0 100 102 91.8 75.5 88.8 78.6 86.903/19/2008 04/03/2008 Y11977 88.1 90.1 75.4 88.4 95.5 90.9 83.8 93.8 83.2 82.804/24/2008 04/30/2008 Y12883 89.3 91.7 82.9 101 105 101 79.6 108 65.5 73.805/30/2008 06/18/2008 Y05908 87.3 91.9 90.6 92.1 97.9 92.9 88.8 92.9 75.9 92.208/10/2008 08/28/2008 Y05161 93.1 94.6 90.3 91.4 86.6 93.5 71.4 100 76.4 10409/27/2008 10/16/2008 Y16119 92.8 92.3 98.4 96.5 103 94.0 77.4 107 73.6 10312/20/2008 12/31/2008 Y12874 107 105 97.6 106 95.6 99.6 107 103 72.8 10502/18/2009 03/04/2009 Y05951 63.8 103 76.0 93.1 94.9 98.3 97.9 81.1 74.5 80.004/07/2009 04/23/2009 Y16052 111 90.5 110 112 113 107 85.0 99.4 77.0 115

05/25/2009 06/11/2009 Y15939 89.2 89.3 92.5 99.0 93.5 90.1 76.1 81.6 77.9 92.5
158 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Ethyl tert- butyl ether (ETBE) Tetrahydrofran tert-Amyl alcohol 1,2- Dichloroethane 1,1,1- Trichloroethane 1,1- Dichloropropene Tetrachloro- methane Benzene tert-Pentyl methyl ether Dibromo- methane 11/29/2003 12/18/2003 Y12089 105 107 116 108 108 113 123 111 102 106 12/23/2003 01/29/2004 Y15630 87.0 102 73.5 106 110 107 113 122 83.2 97.9 01/14/2004 02/06/2004 Y11407 123 122 119 112 99.4 111 113 89.8 127 111 02/21/2004 02/27/2004 Y26371 85.5 85.2 73.4 102 94.1 97.6 105 134 89.5 105 04/09/2004 04/16/2004 Y26371 77.1 73.5 79.7 94.1 87.9 98.4 99.7 91.5 83.6 94.4 04/21/2004 05/06/2004 Y11241 73.1 89.8 116 98.6 78.9 93.8 75.8 126 78.9 104 07/26/2004 08/25/2004 Y11458 84.2 82.9 93.8 96.9 94.1 94.8 98.3 107 81.8 102 09/23/2004 10/13/2004 Y29357 114 102 81.2 122 112 124 116 106 106 111 02/15/2005 03/03/2005 Y29305 124 106 103 112 116 113 121 119 124 104 03/11/2005 03/30/2005 Y10925 76.3 98.9 71.5 86.8 77.0 104 83.2 87.5 73.7 74.3 05/10/2005 05/17/2005 Y11968 101 107 104 115 97.2 113 103 96.6 99.5 94.0 06/03/2005 06/20/2005 Y16392 84.5 91.2 69.5 107 107 91.8 109 78.7 87.9 102 08/02/2005 08/17/2005 Y26144 95.4 109 92.3 121 114 121 125 110 97.8 121 09/19/2005 10/05/2005 Y07567 90.5 102 121 106 97.5 106 106 90.0 88.5 101 10/13/2005 11/02/2005 Y08490 73.9 87.4 79.4 87.7 86.2 82.6 87.1 81.3 73.3 76.2 02/22/2006 03/09/2006 Y16229 94.6 100 86.5 97.2 100 102 101 84.0 102 98.8 04/23/2006 05/11/2006 Y29313 77.4 103 76.7 105 107 107 116 86.5 72.1 103 10/08/2006 10/25/2006 Y12870 114 95.3 132 108 111 105 117 81.8 115 93.6 02/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA 04/30/2007 05/16/2007 Y16139 102 89.6 74.2 98.7 98.1 105 102 86.1 97.7 97.6 05/24/2007 06/14/2007 Y16099 101 90.2 68.9 96.9 96.6 99.4 99.5 94.0 96.5 86.9 08/16/2007 09/05/2007 Y16119 106 94.2 95.6 91.2 91.6 95.4 99.0 84.6 107 93.5 10/15/2007 10/19/2007 Y05868 94.4 96.9 83.5 90.9 94.6 100 95.0 80.1 91.7 86.4 11/20/2007 12/06/2007 Y16139 70.7 95.1 70.2 84.2 80.6 81.8 82.5 73.5 69.8 87.6 01/07/2008 01/23/2008 Y15989 114 104 122 80.1 80.6 78.5 74.5 77.5 127 71.4 01/31/2008 02/19/2008 Y05161 104 98.8 71.9 110 108 110 124 83.6 100 99.8 02/24/2008 03/13/2008 Y05908 112 92.8 100 79.4 87.5 91.2 98.1 84.5 112 80.4 03/19/2008 04/03/2008 Y11977 89.0 88.1 102 89.5 85.6 91.7 89.6 69.2 86.2 86.7 04/24/2008 04/30/2008 Y12883 86.9 101 72.2 102 101 103 112 82.5 76.6 96.9 05/30/2008 06/18/2008 Y05908 83.3 88.5 84.3 90.4 87.9 93.4 95.4 77.6 76.8 90.2 08/10/2008 08/28/2008 Y05161 94.5 87.5 109 91.4 87.7 97.7 96.6 70.1 92.8 84.2

09/27/2008 10/16/2008 Y16119 102 97.7 90.4 99.4 95.5 94.4 106 88.4 100 95.712/20/2008 12/31/2008 Y12874 103 102 132 88.9 95.1 99.0 106 103 102 10202/18/2009 03/04/2009 Y05951 67.7 87.1 86.1 87.0 86.0 99.8 98.5 87.5 69.4 98.204/07/2009 04/23/2009 Y16052 122 110 90.1 103 104 106 110 105 107 89.8

05/25/2009 06/11/2009 Y15939 92.1 93.6 82.7 90.4 92.5 94.1 92.5 72.9 94.1 86.8
Appendix 159

Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

1,2-

Dichloropropane Trichloroethene (TCE) Bromodichloro- mathane Methylmeth- acrylate cis 1,3- Dichloro- propene 4-Methyl- 2-pentanone (MIBK) trans 1,3- Dichloro- propene 1,1,2- Trichloro- ethane Toluene 1,3- Dichloro- propene

11/29/2003 12/18/2003 Y12089 110 115 109 87.6 100 108 87.9 114 113 105

12/23/2003 01/29/2004 Y15630 105 104 107 76.8 109 96.3 107 106 114 10601/14/2004 02/06/2004 Y11407 108 113 102 105 102 115 90.7 116 99.6 10202/21/2004 02/27/2004 Y26371 101 98.4 95.4 82.3 105 92.4 111 101 98.7 10404/09/2004 04/16/2004 Y26371 96.4 100 89.7 74.8 90.9 78.6 85.1 95.9 92.4 95.304/21/2004 05/06/2004 Y11241 94.8 91.8 76.7 104 93.8 90.7 96.0 98.0 128 89.407/26/2004 08/25/2004 Y11458 96.2 89.6 87.3 99.0 102 92.7 108 98.4 113 97.209/23/2004 10/13/2004 Y29357 120 113 109 123 119 122 126 121 126 12202/15/2005 03/03/2005 Y29305 113 114 119 93.2 107 107 97.1 108 110 115

03/11/2005 03/30/2005 Y10925 93.2 76.1 82.3 110 89.8 115 96.2 89.1 98.8 91.1

05/10/2005 05/17/2005 Y11968 115 102 106 113 119 119 121 104 114 10606/03/2005 06/20/2005 Y16392 73.3 98.7 75.1 98.0 76.3 97.1 76.1 75.3 77.5 74.708/02/2005 08/17/2005 Y26144 123 128 123 115 129 124 130 129 114 12809/19/2005 10/05/2005 Y07567 101 111 100 103 90.7 93.4 89.8 103 103 10310/13/2005 11/02/2005 Y08490 82.6 88.0 94.9 86.4 72.7 80.3 73.0 79.9 80.6 80.502/22/2006 03/09/2006 Y16229 104 101 106 67.6 103 99.0 92.5 99.4 91.9 97.404/23/2006 05/11/2006 Y29313 105 106 108 84.1 111 102 104 107 103 10710/08/2006 10/25/2006 Y12870 93.5 119 90.8 118 97.1 106 102 93.5 84.1 95.702/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA04/30/2007 05/16/2007 Y16139 102 102 106 92.6 106 95.1 100 103 101 10105/24/2007 06/14/2007 Y16099 97.9 87.3 95.7 84.4 98.7 90.8 90.2 100 92.8 95.908/16/2007 09/05/2007 Y16119 95.2 90.6 94.8 101 101 107 96.9 98.4 98.8 10310/15/2007 10/19/2007 Y05868 95.4 94.5 98.3 87.9 97.2 97.7 92.6 101 89.9 98.6

11/20/2007 12/06/2007 Y16139 85.4 81.1 86.2 76.8 80.3 109 75.4 88.6 83.1 83.0

01/07/2008 01/23/2008 Y15989 82.3 137 80.0 107 79.9 103 69.3 85.4 129 88.901/31/2008 02/19/2008 Y05161 107 98.8 112 108 118 108 116 112 105 11002/24/2008 03/13/2008 Y05908 90.2 92.7 87.2 92.8 93.3 95.2 88.2 93.6 92.8 91.603/19/2008 04/03/2008 Y11977 91.1 92.3 87.5 84.4 89.1 88.6 85.8 95.0 87.2 88.204/24/2008 04/30/2008 Y12883 100 108 102 75.5 94.9 105 97.5 108 79.9 10405/30/2008 06/18/2008 Y05908 91.1 85.9 93.0 94.4 99.7 93.5 97.7 96.5 89.9 92.808/10/2008 08/28/2008 Y05161 94.8 119 95.7 106 98.4 96.8 95.4 97.4 94.9 94.609/27/2008 10/16/2008 Y16119 95.2 88.8 89.8 118 104 85.6 107 104 94.6 97.712/20/2008 12/31/2008 Y12874 106 111 106 107 107 81.8 97.8 109 75.0 10802/18/2009 03/04/2009 Y05951 102 112 96.6 80.8 101 80.9 96.9 103 104 10104/07/2009 04/23/2009 Y16052 103 105 98.7 115 106 113 100 106 101 103

05/25/2009 06/11/2009 Y15939 105 94.0 104.4 87.0 112 104 101 103 93.6 108
160 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Ethylmeth- acrylate 2-Hexanone (MBK) Dibromochloro- methane 1,2- Dibromo- ethane Tetrachloro- ethene (PCE) 1,1,1,2- Tetrachloro- ethane Chlorobenzene Ethylbenzene m- and 

p-Xylene

Bromoform 

(tribromomethane)

11/29/2003 12/18/2003 Y12089 103 111 122 103 112 115 112 103 103 106

12/23/2003 01/29/2004 Y15630 78.7 91.4 111 103 102 109 108 96.1 122 95.701/14/2004 02/06/2004 Y11407 122 121 115 97.6 106 112 111 111 110 11902/21/2004 02/27/2004 Y26371 90.7 102 110 109 99.3 107 100 101 97.9 10904/09/2004 04/16/2004 Y26371 78.9 80.5 99.7 94.8 93.0 100 95.6 87.7 83.5 97.004/21/2004 05/06/2004 Y11241 92.2 92.0 90.4 86.3 90.0 88.7 93.9 95.8 101 86.707/26/2004 08/25/2004 Y11458 106 102 98.8 108 93.2 98.5 98.6 88.5 83.3 83.609/23/2004 10/13/2004 Y29357 101 117 124 120 116 128 121 110 107 12302/15/2005 03/03/2005 Y29305 102 102 120 108 115 115 109 104 107 109

03/11/2005 03/30/2005 Y10925 106 118 73.8 85.5 79.7 108 101 94.1 97.5 76.8

05/10/2005 05/17/2005 Y11968 114 120 123 104 104 110 103 104 104 12006/03/2005 06/20/2005 Y16392 102 102 73.3 91.0 102 94.0 91.2 88.4 87.0 98.408/02/2005 08/17/2005 Y26144 125 125 122 99.3 114 117 125 111 109 12709/19/2005 10/05/2005 Y07567 101 90.3 114 105 122 111 104 104 99.3 88.810/13/2005 11/02/2005 Y08490 70.6 81.8 88.3 76.7 77.2 83.0 82.9 80.5 80.7 73.802/22/2006 03/09/2006 Y16229 78.2 96.7 106 94.5 102 99.6 100 82.1 79.1 89.804/23/2006 05/11/2006 Y29313 73.8 106 116 104 128 108 104 104 103 11410/08/2006 10/25/2006 Y12870 112 96.9 112 92.8 98.6 89.8 84.2 95.9 96.0 10802/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA04/30/2007 05/16/2007 Y16139 96.3 93.6 108 97.3 97.0 102 99.9 105 103 11505/24/2007 06/14/2007 Y16099 82.2 97.0 95.8 99.0 93.3 94.6 95.4 98.2 97.8 10308/16/2007 09/05/2007 Y16119 109 114 106 101 102 97.9 108 101 99.1 10710/15/2007 10/19/2007 Y05868 94.7 102 102 105 98.6 101 101 87.0 85.1 89.6

11/20/2007 12/06/2007 Y16139 88.9 119 89.8 83.8 88.4 89.2 89.6 70.3 70.2 68.8

01/07/2008 01/23/2008 Y15989 126 93.5 79.6 78.6 129 81.2 98.0 86.9 89.1 78.701/31/2008 02/19/2008 Y05161 112 111 124 112 102 115 110 115 113 12902/24/2008 03/13/2008 Y05908 103 107 97.1 99.2 85.8 94.8 93.4 87.7 88.1 10203/19/2008 04/03/2008 Y11977 92.5 89.8 97.8 85.5 90.4 94.1 91.3 97.6 96.3 10404/24/2008 04/30/2008 Y12883 85.1 109 113 106 99.9 109 106 94.6 93.5 10805/30/2008 06/18/2008 Y05908 87.2 91.0 97.3 93.4 94.1 94.1 91.1 90.3 89.3 96.308/10/2008 08/28/2008 Y05161 105 97.3 99.3 98.5 115 90.4 99.5 100 99.8 10709/27/2008 10/16/2008 Y16119 111 119 109 104 93.0 106 96.3 84.6 84.1 95.612/20/2008 12/31/2008 Y12874 98.1 91.2 115 105 109 111 103 74.7 103 13002/18/2009 03/04/2009 Y05951 71.8 87.3 107 99.7 108 101 109 99.7 107 10804/07/2009 04/23/2009 Y16052 112 124 110 102 102 104 105 125 108 112

05/25/2009 06/11/2009 Y15939 94.4 104 116 105 102 105 101 90.0 89.6 104
Appendix 161

Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Ethenylbenzene 

(styrene)

1,1,2,2-

Tetrachloroethane o-Xylene

1,2,3-

Trichloropropene

trans-1,4-

Dichloro2-butene

Isopropylbenzene 

(cumene)

Bromobenzene n- propylbenzene

1-Chloro2-methylbenzene 1-Chloro- 4-methyl- benzene

11/29/2003 12/18/2003 Y12089 106 99.6 106 107 75.0 105 106 101 107 103

12/23/2003 01/29/2004 Y15630 96.4 93.6 96.2 94.4 96.7 94.5 95.1 94.1 92.1 90.901/14/2004 02/06/2004 Y11407 113 109 111 111 89.0 109 107 112 109 11202/21/2004 02/27/2004 Y26371 104 100 101 101 127 101 102 106 102 10504/09/2004 04/16/2004 Y26371 85.7 91.2 90.5 85.8 92.0 93.9 94.0 91.5 91.0 93.704/21/2004 05/06/2004 Y11241 102 90.8 93.9 96.4 107 90.8 94.7 91.3 92.2 94.907/26/2004 08/25/2004 Y11458 93.2 96.9 85.8 83.2 107 89.2 81.7 92.1 76.5 84.209/23/2004 10/13/2004 Y29357 112 121 107 109 97.0 108 105 106 103 10702/15/2005 03/03/2005 Y29305 104 95.4 103 107 83.4 102 100 104 101 104

03/11/2005 03/30/2005 Y10925 104 99.5 96.4 96.9 83.5 95.8 97.3 99.9 93.7 100

05/10/2005 05/17/2005 Y11968 107 117 103 112 115 99.9 112 103 104 10706/03/2005 06/20/2005 Y16392 98.1 78.0 85.0 97.9 72.3 91.8 91.1 90.4 92.0 93.408/02/2005 08/17/2005 Y26144 119 112 114 128 119 111 114 117 116 11709/19/2005 10/05/2005 Y07567 104 91.6 98.6 104 81.5 102 104 100 99.4 100.210/13/2005 11/02/2005 Y08490 80.4 90.9 82.1 86.6 66.8 80.9 82.0 81.5 79.5 82.102/22/2006 03/09/2006 Y16229 79.4 81.9 82.6 79.2 70.2 83.4 85.0 81.9 79.5 84.204/23/2006 05/11/2006 Y29313 106 109 102 104 82.9 105 104 106 103 10710/08/2006 10/25/2006 Y12870 92.7 66.0 92.8 98.9 81.6 95.8 98.4 93.9 95.6 96.502/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA04/30/2007 05/16/2007 Y16139 109 109 99.8 99.3 94.2 103 104 102 97.2 10305/24/2007 06/14/2007 Y16099 101 106 98.0 99.9 102 98.8 98.9 101 97.6 10108/16/2007 09/05/2007 Y16119 105 106 97.1 101 95.3 100 98.9 99.1 97.3 10010/15/2007 10/19/2007 Y05868 92.5 94.0 86.8 89.1 80.1 87.6 89.6 89.3 86.1 92.0

11/20/2007 12/06/2007 Y16139 74.3 84.9 71.4 75.0 65.3 72.8 73.5 77.1 74.0 76.7

01/07/2008 01/23/2008 Y15989 95.9 80.1 89.9 90.9 93.9 95.0 96.3 99.5 95.6 10001/31/2008 02/19/2008 Y05161 121 118 113 115 129 115 121 117 117 11802/24/2008 03/13/2008 Y05908 97.3 90.2 86.6 89.2 101 88.0 91.0 90.4 87.3 94.203/19/2008 04/03/2008 Y11977 99.8 98.2 96.2 95.7 69.2 96.4 96.1 98.4 95.4 96.904/24/2008 04/30/2008 Y12883 95.4 97.8 95.6 97.0 80.8 102 101 100 101 10305/30/2008 06/18/2008 Y05908 95.6 104 90.1 90.2 74.4 88.5 92.1 89.6 88.5 91.808/10/2008 08/28/2008 Y05161 103 79.4 97.0 106 66.2 96.1 102 101 102 10509/27/2008 10/16/2008 Y16119 91.4 95.5 84.9 92.5 121 86.2 85.4 91.3 90.1 94.712/20/2008 12/31/2008 Y12874 108 106 107 119 95.4 91.5 109 79.0 109 10802/18/2009 03/04/2009 Y05951 119 95.9 116 106 71.1 102 109 94.5 107 11804/07/2009 04/23/2009 Y16052 117 98.4 108 105 88.8 121 105 83.6 108 109

05/25/2009 06/11/2009 Y15939 93.4 92.5 89.4 92.9 72.2 91.2 88.9 94.1 88.7 92.9
162 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number 1,3,5- Trimethyl- benzene 2- Ethyltoluene tert- Butylbenzene 1,2,4- Trimethyl- benzene sec- Butylbenzene 1,3- Dichloro- benzene 1,4- Dichloro- benzene 1-Isopropyl- 4-methylbenzene 1,2,3- Trimethyl- benzene 1,2- Dichloro- benzene 11/29/2003 12/18/2003 Y12089 106 103 108 103 101 111 110 109 106 113 12/23/2003 01/29/2004 Y15630 92.0 90.5 90.4 89.8 90.6 95.8 95.1 97.9 96.9 92.9 01/14/2004 02/06/2004 Y11407 110 111 109 111 110 99.9 99.9 103 103 99.8 02/21/2004 02/27/2004 Y26371 108 106 102 104 109 99.0 100 98.5 99.5 98.2 04/09/2004 04/16/2004 Y26371 95.2 92.4 96.9 92.4 94.7 90.6 90.6 86.4 88.5 90.4 04/21/2004 05/06/2004 Y11241 90.8 89.0 100 89.5 88.0 93.1 91.7 81.5 88.5 89.9 07/26/2004 08/25/2004 Y11458 87.5 89.2 78.0 87.7 92.4 78.3 79.0 87.8 83.6 77.7 09/23/2004 10/13/2004 Y29357 105 106 102 104 104 105 108 104 104 102 02/15/2005 03/03/2005 Y29305 99.8 103 93.8 104 99.2 107 108 108 106 106 03/11/2005 03/30/2005 Y10925 98.1 100 100 101 99.2 87.2 85.5 97.4 101 79.4 05/10/2005 05/17/2005 Y11968 107 106 105 109 107 92.6 92.1 92.1 93.8 96.9 06/03/2005 06/20/2005 Y16392 93.2 94.2 117 95.9 93.3 82.7 84.4 76.3 75.0 86.7 08/02/2005 08/17/2005 Y26144 114 114 110 117 117 118 113 116 113 111 09/19/2005 10/05/2005 Y07567 102 102 107 102 102 103 101 102 99.1 103 10/13/2005 11/02/2005 Y08490 80.5 77.7 71.8 79.1 79.2 89.4 94.8 95.0 90.0 88.5 02/22/2006 03/09/2006 Y16229 79.7 81.2 87.4 84.6 81.6 83.0 84.6 83.3 82.3 84.5 04/23/2006 05/11/2006 Y29313 105 104 109 108 108 102 103 98.3 100 99.2 10/08/2006 10/25/2006 Y12870 91.2 92.3 99.5 89.9 89.5 104 103 87.7 91.5 103 02/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA 04/30/2007 05/16/2007 Y16139 105 103 101 105 105 97.3 95.4 94.3 93.9 93.9 05/24/2007 06/14/2007 Y16099 100 99.8 98.3 98.5 99.2 91.6 91.9 98.1 95.1 97.3 08/16/2007 09/05/2007 Y16119 100 99.1 97.4 101 98.3 99.7 98.4 101 98.6 99.0 10/15/2007 10/19/2007 Y05868 86.4 87.8 88.1 86.9 88.1 86.6 87.2 85.2 83.0 85.9 11/20/2007 12/06/2007 Y16139 78.9 77.3 77.1 79.6 79.5 85.1 86.4 87.2 87.6 88.9 01/07/2008 01/23/2008 Y15989 103 101 101 104 104 91.5 94.7 95.0 92.9 93.0 01/31/2008 02/19/2008 Y05161 118 117 114 120 120 102 104 99.2 97.8 99.1 02/24/2008 03/13/2008 Y05908 89.1 88.5 87.0 89.2 88.5 89.0 91.6 87.9 84.5 85.5 03/19/2008 04/03/2008 Y11977 96.2 96.8 93.4 95.8 95.0 90.2 90.7 89.8 92.3 87.6 04/24/2008 04/30/2008 Y12883 100 101 101 99.5 101 103 108 105 105 101 05/30/2008 06/18/2008 Y05908 88.9 90.6 87.4 90.5 90.5 76.7 75.0 76.0 74.5 77.8 08/10/2008 08/28/2008 Y05161 94.0 97.2 96.0 94.0 90.8 106 108 85.9 92.1 94.9

09/27/2008 10/16/2008 Y16119 88.8 88.9 89.0 90.0 89.1 88.2 86.6 81.9 85.2 82.412/20/2008 12/31/2008 Y12874 110 91.1 107 113 100 96.5 98.4 95.7 96.9 90.302/18/2009 03/04/2009 Y05951 111 102 111 112 101 92.6 89.5 97.2 99.2 83.204/07/2009 04/23/2009 Y16052 110 123 109 116 124 111 115 122 122 104

05/25/2009 06/11/2009 Y15939 93.2 92.7 91.3 92.2 95.1 77.8 78.7 81.6 81.3 77.2
Appendix 163

Table B3A. Quality-control travel spike results for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Values are given in percentage recovery. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

nButylbenzene

1,2,-Dibromo3-chloropropene 

(DBCP)

Hexachloroethane 1,2,4,5- Tetramethyl- benzene 1,2,3,5- Tetramethyl- benzene 1,2,3,4- Tetramethyl- benzene 1,2,4- Trichloro- benzene Naphthalene Hexachloro- butadiene 1,2,3- Trichloro- benzene

11/29/2003 12/18/2003 Y12089 109 114 117 111 109 107 111 113 107 114

12/23/2003 01/29/2004 Y15630 96.0 107 109 94.1 92.2 95.4 89.2 93.7 94.9 91.2

01/14/2004 02/06/2004 Y11407 99.8 98.7 123 108 107 110 106 110 100 106

02/21/2004 02/27/2004 Y26371 99.4 102 99.8 104 104 107 108 112 96.6 110

04/09/2004 04/16/2004 Y26371 90.7 93.2 99.7 95.7 95.2 100 100 99.9 102 110

04/21/2004 05/06/2004 Y11241 87.9 103 112 83.0 85.4 83.8 104 103 100 10507/26/2004 08/25/2004 Y11458 89.3 104 80.3 97.5 89.1 94.7 89.2 98.2 89.6 93.3

09/23/2004 10/13/2004 Y29357 102 118 128 96.4 96.8 92.5 103 98.1 99.6 102

02/15/2005 03/03/2005 Y29305 107 107 107 108 102 106 117 117 112 110

03/11/2005 03/30/2005 Y10925 105 111 80.5 116 111 117 108 119 82.4 111

05/10/2005 05/17/2005 Y11968 101 126 103 109 112 113 116 124 104 104

06/03/2005 06/20/2005 Y16392 75.2 75.5 89.1 90.4 89.2 89.9 96.4 99.7 107 106

08/02/2005 08/17/2005 Y26144 118 115 114 122 119 119 114 109 113 110

09/19/2005 10/05/2005 Y07567 102 95.9 90.0 97.0 97.6 95.8 102 98.3 113 96.6

10/13/2005 11/02/2005 Y08490 94.2 96.8 82.6 85.0 84.6 83.2 91.8 89.6 82.4 88.5

02/22/2006 03/09/2006 Y16229 85.7 90.8 86.7 92.0 93.0 97.1 94.9 96.5 98.2 98.1

04/23/2006 05/11/2006 Y29313 104 105 104 113 115 118 129 127 129 121

10/08/2006 10/25/2006 Y12870 89.1 69.2 106 82.3 83.0 80.8 110 85.2 108 104

02/17/2007 03/08/2007 Y05908 NA NA NA NA NA NA NA NA NA NA

04/30/2007 05/16/2007 Y16139 97.7 99.7 96.6 102 110 105 109 111 105 104

05/24/2007 06/14/2007 Y16099 100 102 92.3 104 105 106 109 109 104 110

08/16/2007 09/05/2007 Y16119 103 124 100 110 112 114 117 123 106 113

10/15/2007 10/19/2007 Y05868 85.3 101 88.3 86.4 87.7 89.0 93.9 97.1 93.3 90.9

11/20/2007 12/06/2007 Y16139 93.9 112 84.7 103 103 110 113 123 103 119

01/07/2008 01/23/2008 Y15989 99.1 84.8 82.8 107 107 114 116 120 101 117

01/31/2008 02/19/2008 Y05161 107 120 121 112 112 120 136 126 116 125

02/24/2008 03/13/2008 Y05908 90.8 99.4 98.8 94.5 94.0 97.5 115 114 92.1 111

03/19/2008 04/03/2008 Y11977 92.2 89.2 82.4 88.7 88.8 89.3 85.9 87.8 87.2 84.0

04/24/2008 04/30/2008 Y12883 104 97.0 116 106 108 106 100 98.5 103 10105/30/2008 06/18/2008 Y05908 79.5 95.8 83.6 80.8 80.1 85.0 87.7 91.5 78.2 86.6

08/10/2008 08/28/2008 Y05161 90.9 75.7 74.6 78.5 78.3 76.2 95.6 80.1 94.1 84.1

09/27/2008 10/16/2008 Y16119 87.0 127 105 87.4 84.5 87.7 97.3 91.3 83.1 94.3

12/20/2008 12/31/2008 Y12874 96.8 87.0 93.5 104 102 107 110 107 101 109

02/18/2009 03/04/2009 Y05951 87.0 79.8 77.0 102 96.4 97.8 102 116 87.9 98.5

04/07/2009 04/23/2009 Y16052 123 115 107 120 117 114 115 121 114 117

05/25/2009 06/11/2009 Y15939 80.5 82.9 74.7 86.4 87.0 85.9 88.0 88.3 81.9 89.2
164 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a con- centration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Pressure (mm of Hg) Temper- ature (°C) Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide Methyl tert- butyl ether (MTBE) 2-Butanone (methyl ethyl ketone) Trichloro- methane (chloroform) Benzene [LRL] [0.20] [0.60] [0.19] [0.09] [0.16] [0.10] [0.14] [0.09] [0.11] 10/12/2003 10/16/2003 Y29357 759.7 20.7 E0.175

—

—

— E0.014

—

—

— 0.145

10/24/2003 11/24/2003 Y26416 759.0 18.2 0.208

—

—

—

—

—

—

— E0.058

11/05/2003 11/24/2003 Y26371 761.7 12.7 0.493 1.12

—

— E0.030

—

—

— 0.154

11/17/2003 11/24/2003 Y16229 763.0 13.3 E0.153

—

—

— E0.002

—

—

— 0.150

11/29/2003 12/18/2003 Y29305 761.9 15.0 0.691

—

—

—

—

—

—

— 0.126

12/11/2003 12/18/2003 Y11396 761.6 12.0 E0.164

—

—

—

—

—

—

— E0.072

12/23/2003 02/03/2004 Y11861 760.7 15.4 0.254

—

—

—

—

—

—

— E0.076

01/04/2004 02/03/2004 Y16579 764.9 9.5 0.283

—

—

—

—

—

—

— E0.046

01/14/2004 02/06/2004 Y10925 758.0 12.9 E0.191

— E0.005

— E0.004

—

—

— E0.061

01/28/2004 02/06/2004 Y16108 763.5 12.3 0.264

—

—

— E0.002

—

—

— E0.071

02/09/2004 02/27/2004 Y10962 762.5 12.4 0.309 E0.033 E0.005 E0.006

—

— E0.025

— 0.151

02/21/2004 02/27/2004 Y25997 757.9 11.7 0.686 E0.275 E0.015

— E0.011

—

—

— 0.231

03/04/2004 03/26/2004 Y11181 758.8 13.8 E0.165 E0.023

—

—

—

—

—

— E0.082

03/16/2004 03/26/2004 Y10925 760.6 15.0 0.381 E0.038

—

— E0.002

—

—

— E0.081

03/28/2004 04/16/2004 Y11407 760.2 20.8 E0.104

—

—

— E0.001

—

—

— E0.053

04/09/2004 04/16/2004 Y06586 760.3 16.6 0.212 E0.018

—

—

—

—

—

— E0.067

04/21/2004 05/06/2004 Y26830 760.8 16.0 0.539

— E0.027

— E0.091

—

—

— E0.101

05/03/2004 05/06/2004 Y29329 758.1 18.2 0.366

—

—

— E0.123

— E0.107

— E0.098

05/15/2004 06/04/2004 Y15649 757.5 18.2 1.185

—

—

— E0.070

—

—

— E0.099

05/27/2004 06/04/2004 Y16150 761.2 17.5 0.709

—

—

— E0.004

—

—

— 0.119

06/08/2004 06/28/2004 Y16109 757.3 17.1 0.698

—

—

— E0.027

—

—

— E0.095

06/20/2004 06/28/2004 Y15649 760.7 19.2 1.420

—

—

— E0.043

—

—

— 0.198

07/02/2004 07/21/2004 Y29329 761.7 18.9 0.646

—

—

— E0.040

—

—

— 0.186

07/14/2004 07/21/2004 Y10962 759.7 22.9 E0.161 E0.021

—

— E0.001

—

—

— E0.084

07/26/2004 08/25/2004 Y06313 758.9 21.2 0.284 E0.045

—

— E0.004

—

—

— 0.123

08/19/2004 08/25/2004 Y07567 759.9 20.7 E0.139 E0.077

—

— E0.004

—

—

— E0.069

08/31/2004 09/21/2004 Y11984 759.1 22.2 0.664 E0.121

—

— E0.004

—

—

— E0.095

09/12/2004 09/21/2004 Y29305 757.7 22.5 0.362 E0.060

—

— E0.005

—

—

— 0.155

09/23/2004 10/13/2004 Y12028 759.2 22.1 0.397 E0.041

—

—

—

—

—

— 0.128

10/06/2004 10/13/2004 Y07567 759.0 17.9 0.381 E0.027

—

— E0.013

—

—

— E0.059

10/18/2004 11/10/2004 Y29305 758.9 18.7 0.299 E0.119

—

—

—

—

—

— E0.083

10/30/2004 11/10/2004 Y29342 761.7 15.0 0.304

—

—

—

—

—

—

— E0.010

11/23/2004 12/08/2004 Y29380 763.3 11.2 0.681 E0.473

—

—

—

—

—

— 0.114

12/05/2004 12/08/2004 Y16286 754.7 10.5 E0.199 E0.049

—

—

—

—

—

— 0.143

Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
Appendix 165

Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Pressure 

(mm of 

Hg)

Temperature 

(°C)

Toluene

1,3-

Dichloropropane

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) o-Xylene Bromobenzene Naphthalene

[LRL] [0.08] [0.09] [0.50] [0.07] [0.09] [0.09] [0.07] [0.06] [0.09]

10/12/2003 10/16/2003 Y29357 759.7 20.7 E0.016 — — E0.002 E0.006 — — — —10/24/2003 11/24/2003 Y26416 759.0 18.2 E0.005 — — — E0.001 — — — —

11/05/2003 11/24/2003 Y26371 761.7 12.7 E0.025 — — — E0.001 E0.003 — — —11/17/2003 11/24/2003 Y16229 763.0 13.3 E0.005 — — — — — — — —11/29/2003 12/18/2003 Y29305 761.9 15.0 E0.013 — — — — — — — E0.00212/11/2003 12/18/2003 Y11396 761.6 12.0 E0.004 — — — — — — — —

12/23/2003 02/03/2004 Y11861 760.7 15.4 E0.008 — — — — — — — —01/04/2004 02/03/2004 Y16579 764.9 9.5 E0.017 — — — — — — — —01/14/2004 02/06/2004 Y10925 758.0 12.9 E0.011 — — E0.002 E0.006 E0.001 E0.003 — E0.00201/28/2004 02/06/2004 Y16108 763.5 12.3 E0.008 — — E0.001 E0.003 E0.001 E0.001 — E0.00202/09/2004 02/27/2004 Y10962 762.5 12.4 E0.029 — — E0.004 E0.008 E0.002 E0.002 — E0.00202/21/2004 02/27/2004 Y25997 757.9 11.7 E0.014 — — E0.002 E0.004 E0.001 — — E0.00303/04/2004 03/26/2004 Y11181 758.8 13.8 E0.005 — — — E0.001 E0.001 — — E0.00203/16/2004 03/26/2004 Y10925 760.6 15.0 E0.006 — — — — — — — —03/28/2004 04/16/2004 Y11407 760.2 20.8 E0.006 — — — E0.001 — — — E0.00204/09/2004 04/16/2004 Y06586 760.3 16.6 E0.006 — — — E0.001 E0.001 E0.001 — E0.00204/21/2004 05/06/2004 Y26830 760.8 16.0 E0.015 — — E0.002 E0.006 E0.003 E0.002 — E0.00605/03/2004 05/06/2004 Y29329 758.1 18.2 0.080 — — E0.005 E0.015 E0.015 E0.004 — E0.00505/15/2004 06/04/2004 Y15649 757.5 18.2 E0.051 — — E0.002 E0.008 E0.008 E0.002 — E0.00405/27/2004 06/04/2004 Y16150 761.2 17.5 E0.019 — — E0.001 E0.003 E0.006 E0.001 — E0.00506/08/2004 06/28/2004 Y16109 757.3 17.1 E0.042 — — E0.003 E0.006 E0.012 E0.003 — E0.00206/20/2004 06/28/2004 Y15649 760.7 19.2 E0.075 — — E0.007 E0.017 E0.011 E0.005 — E0.00607/02/2004 07/21/2004 Y29329 761.7 18.9 E0.038 — — E0.003 E0.006 E0.008 E0.002 — E0.00407/14/2004 07/21/2004 Y10962 759.7 22.9 E0.009 — — E0.001 E0.002 E0.004 E0.001 — E0.00207/26/2004 08/25/2004 Y06313 758.9 21.2 E0.016 — — E0.002 E0.003 E0.002 E0.002 — E0.00308/19/2004 08/25/2004 Y07567 759.9 20.7 E0.007 — — E0.001 E0.003 — E0.002 — E0.00308/31/2004 09/21/2004 Y11984 759.1 22.2 E0.051 — — E0.005 E0.006 E0.005 E0.002 — E0.00209/12/2004 09/21/2004 Y29305 757.7 22.5 E0.018 — — — E0.004 E0.003 E0.004 — E0.00309/23/2004 10/13/2004 Y12028 759.2 22.1 E0.013 — — E0.002 E0.004 E0.005 E0.001 — E0.00310/06/2004 10/13/2004 Y07567 759.0 17.9 E0.017 — — E0.002 E0.005 E0.003 E0.001 — E0.00410/18/2004 11/10/2004 Y29305 758.9 18.7 E0.018 — — E0.002 E0.005 E0.003 E0.001 — E0.00310/30/2004 11/10/2004 Y29342 761.7 15.0 E0.017 — — E0.002 E0.004 E0.003 E0.001 — E0.003

11/23/2004 12/08/2004 Y29380 763.3 11.2 E0.018 — — E0.002 E0.005 E0.004 E0.001 — E0.003

12/05/2004 12/08/2004 Y16286 754.7 10.5 E0.012 — — E0.001 E0.004 — E0.001 — E0.002
166 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a con- centration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Pressure (mm of Hg) Temper- ature (°C) Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide Methyl tert- butyl ether (MTBE) 2-Butanone (methyl ethyl ketone) Trichloro- methane (chloroform) Benzene [LRL] [0.20] [0.60] [0.19] [0.09] [0.16] [0.10] [0.14] [0.09] [0.11] 12/28/2004 01/20/2005 Y266663 758.4 13.4 0.415 E0.073

—

— E0.004

—

—

— 0.141

01/10/2005 01/20/2005 Y29324 762.2 15.3 E0.172 E0.167

—

—

—

—

—

— E0.091

01/22/2005 02/10/2005 Y08939 762.3 13.6 E0.104

—

—

—

—

—

—

— 0.217

02/03/2005 02/10/2005 Y26416 762.4 15.7 E0.083

—

—

—

—

—

—

— E0.082

02/15/2005 03/03/2005 Y07941 762.4 12.8 0.704

—

—

—

—

—

—

— E0.083

02/27/2005 03/03/2005 Y26371 764.0 14.0 0.317 E0.037

—

—

—

—

—

— E0.085

03/11/2005 03/30/2005 Y29380 760.6 15.0 E0.173 E0.413

—

—

—

—

—

— 0.117

03/23/2005 03/30/2005 Y26426 760.0 13.5 0.339 E0.142

—

—

—

—

—

— 0.246

04/04/2005 04/20/2005 Y11096 762.7 14.0 0.492

—

—

— E0.032

—

—

— E0.101

04/16/2005 04/20/2005 Y11969 759.3 16.0 0.265

—

—

— E0.001

—

—

— 0.132

04/28/2005 05/17/2005 Y16307 762.0 15.1 0.402 E0.065

—

—

—

—

—

— 0.156

05/10/2005 05/17/2005 Y10939 759.9 16.0 0.456 E0.030

—

—

—

—

—

— 0.124

06/03/2005 06/20/2005 Y04390 756.7 18.2 1.31 E0.065 E0.047 E0.058

—

—

—

— 0.177

06/15/2005 06/20/2005 Y12028 758.1 17.8 0.911 E0.031

—

—

—

—

—

— 0.164

07/09/2005 07/28/2005 Y10925 759.2 18.7 0.349

—

—

—

—

—

—

— 0.154

07/25/2005 07/28/2005 Y16286 757.0 25.4 0.301

—

—

—

—

—

—

— 0.138

08/02/2005 08/17/2005 Y16229 758.9 20.6 0.657 E0.207

—

—

—

—

—

— 0.297

08/14/2005 08/17/2005 Y10925 757.9 19.4 0.431 E0.029

—

—

—

—

—

— 0.195

08/26/2005 09/14/2005 Y29313 759.3 25.9 0.386 E0.041

—

—

—

—

—

— E0.094

09/07/2005 09/14/2005 Y07941 758.9 20.3 0.426 E0.241

—

—

—

—

—

— 0.140

09/19/2005 10/05/2005 Y11420 760.1 19.2 0.422 E0.081

—

—

—

—

—

— 0.122

10/01/2005 10/05/2005 Y11396 756.7 20.5 0.359 E0.137

—

—

—

—

—

— 0.140

10/13/2005 11/02/2005 Y15542 759.5 20.3 0.207 E0.041

—

— E0.016

—

—

— 0.152

10/25/2005 11/02/2005 Y16246 763.4 16.4 E0.198 E0.094

—

—

—

—

—

— E0.103

11/06/2005 11/29/2005 Y26830 759.0 15.0 0.382 E0.281

—

—

—

—

—

— E0.103

11/18/2005 11/29/2005 Y16229 762.4 20.2 0.538 E0.381

—

—

—

—

—

— 0.256

12/12/2005 01/04/2006 Y26663 762.7 12.3 0.669 E0.533

—

—

—

—

—

— 0.294

12/24/2005 01/04/2006 Y07941 762.8 13.3 0.208 E0.047

—

—

—

—

—

— 0.140

01/06/2006 01/24/2006 Y29313 765.0 18.1 0.777 E0.192 E0.066 E0.027

—

—

—

— 0.283

01/17/2006 01/24/2006 Y11407 768.0 11.8 0.442 E0.161

—

—

— E0.01

—

— 0.260

01/29/2006 02/15/2006 Y15542 765.2 11.5 0.358 E0.164

—

—

—

—

—

— 0.162

02/10/2006 02/15/2006 Y26371 764.0 12.9 0.207 E0.042

—

—

—

—

—

— 0.117

02/22/2006 03/09/2006 Y06313 763.3 11.2 0.274 E0.024

—

—

—

—

—

— 0.123

03/05/2006 03/09/2006 Y26208 764.7 13.2 0.215 E0.044

—

— E0.008

—

—

— E0.077

03/30/2006 04/13/2006 Y16109 761.8 13.4 0.946 E0.177 E0.028 E0.040 E0.011

—

—

— 0.192
Appendix 167

Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Pressure 

(mm of 

Hg)

Temperature 

(°C)

Toluene

1,3-

Dichloropropane

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) o-Xylene Bromobenzene Naphthalene

[LRL] [0.08] [0.09] [0.50] [0.07] [0.09] [0.09] [0.07] [0.06] [0.09]

12/28/2004 01/20/2005 Y266663 758.4 13.4 E0.064 — — E0.005 E0.012 E0.017 E0.004 — E0.00601/10/2005 01/20/2005 Y29324 762.2 15.3 E0.023 — — — E0.007 — — — E0.00501/22/2005 02/10/2005 Y08939 762.3 13.6 E0.021 — — E0.008 — — — — E0.00102/03/2005 02/10/2005 Y26416 762.4 15.7 E0.006 — — — E0.002 — — — —02/15/2005 03/03/2005 Y07941 762.4 12.8 E0.053 — — E0.008 E0.010 E0.011 E0.004 — E0.00202/27/2005 03/03/2005 Y26371 764.0 14.0 E0.015 — — — — — — — E0.005

03/11/2005 03/30/2005 Y29380 760.6 15.0 E0.014 — — — E0.003 — — — —

03/23/2005 03/30/2005 Y26426 760.0 13.5 E0.016 — — — — — — — E0.01004/04/2005 04/20/2005 Y11096 762.7 14.0 E0.039 — — E0.003 E0.007 E0.007 E0.004 — E0.00304/16/2005 04/20/2005 Y11969 759.3 16.0 E0.012 — — — E0.003 E0.005 — — E0.00304/28/2005 05/17/2005 Y16307 762.0 15.1 E0.016 — — — E0.001 E0.004 — — —05/10/2005 05/17/2005 Y10939 759.9 16.0 E0.016 — — — — — — — —06/03/2005 06/20/2005 Y04390 756.7 18.2 0.086 — — E0.006 E0.008 E0.011 E0.006 — —06/15/2005 06/20/2005 Y12028 758.1 17.8 E0.023 — — — E0.002 E0.007 E0.002 — E0.00107/09/2005 07/28/2005 Y10925 759.2 18.7 E0.038 — — E0.001 E0.003 E0.004 E0.002 — —07/25/2005 07/28/2005 Y16286 757.0 25.4 E0.006 — — — — — — — —08/02/2005 08/17/2005 Y16229 758.9 20.6 E0.059 — — E0.002 E0.006 E0.005 E0.003 — —08/14/2005 08/17/2005 Y10925 757.9 19.4 E0.012 — — — E0.001 E0.002 — — E0.00108/26/2005 09/14/2005 Y29313 759.3 25.9 E0.007 — — E0.001 E0.003 E0.002 E0.001 — —09/07/2005 09/14/2005 Y07941 758.9 20.3 E0.024 — — E0.003 E0.006 E0.007 E0.002 — —09/19/2005 10/05/2005 Y11420 760.1 19.2 E0.041 — — E0.003 E0.007 E0.014 E0.002 — —10/01/2005 10/05/2005 Y11396 756.7 20.5 — — — — — — — — —10/13/2005 11/02/2005 Y15542 759.5 20.3 E0.022 — — E0.006 E0.017 E0.001 E0.001 — —10/25/2005 11/02/2005 Y16246 763.4 16.4 E0.018 — — — — — — — —

11/06/2005 11/29/2005 Y26830 759.0 15.0 0.208 — — E0.008 E0.008 E0.006 E0.011 — E0.01611/18/2005 11/29/2005 Y16229 762.4 20.2 0.098 — — E0.008 E0.006 E0.029 E0.008 — —

12/12/2005 01/04/2006 Y26663 762.7 12.3 0.176 — 2.21 E0.008 E0.008 E0.052 E0.008 — —12/24/2005 01/04/2006 Y07941 762.8 13.3 E0.027 — E0.101 E0.008 E0.008 E0.006 E0.014 — —01/06/2006 01/24/2006 Y29313 765.0 18.1 0.145 — E0.270 E0.008 E0.028 E0.066 E0.012 — E0.01201/17/2006 01/24/2006 Y11407 768.0 11.8 E0.044 — E0.064 E0.008 E0.006 — — — —01/29/2006 02/15/2006 Y15542 765.2 11.5 E0.021 — E0.138 E0.006 E0.008 E0.014 E0.017 — E0.01702/10/2006 02/15/2006 Y26371 764.0 12.9 E0.011 — E0.074 — — — — — E0.00202/22/2006 03/09/2006 Y06313 763.3 11.2 E0.016 — E0.041 E0.001 E0.005 — E0.002 — —03/05/2006 03/09/2006 Y26208 764.7 13.2 E0.008 — — — — — — — —03/30/2006 04/13/2006 Y16109 761.8 13.4 E0.040 — E0.089 E0.004 E0.007 — — — —
168 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a con- centration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Pressure (mm of Hg) Temper- ature (°C) Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide Methyl tert- butyl ether (MTBE) 2-Butanone (methyl ethyl ketone) Trichloro- methane (chloroform) Benzene [LRL] [0.20] [0.60] [0.19] [0.09] [0.16] [0.10] [0.14] [0.09] [0.11] 04/11/2006 04/13/2006 Y08490 760.8 15.6 0.269

—

—

—

—

—

—

— 0.243

04/23/2006 05/11/2006 Y08484 762.2 13.4 0.930 E0.084

— 0.164

—

—

—

— E0.068

05/05/2006 05/11/2006 Y29329 761.1 15.7 0.956 E0.271 E0.072 E0.018 E0.020

—

—

— E0.068

06/10/2006 07/12/2006 Y11968 757.5 17.8

— E0.209

—

—

—

—

—

— 0.120

06/22/2006 07/12/2006 Y15542 760.2 19.7 0.529

—

—

—

—

—

—

— 0.144

07/04/2006 07/12/2006 Y10925 760.7 21.9 E0.120

—

—

—

—

—

—

— 0.200

07/28/2006 08/14/2006 Y29328 759.6 25.1 E0.159 E0.028

—

—

—

—

—

— E0.105

08/09/2006 08/14/2006 Y29305 758.4 23.8 0.370 E0.053

—

—

—

—

—

— E0.082

08/21/2006 09/08/2006 Y16549 758.5 21.7 0.286 E0.034

—

— E0.006

—

—

— 0.126

09/02/2006 09/08/2006 Y16549 755.5 23.2 0.289 E0.035

—

— E0.006

—

—

— 0.127

09/14/2006 10/02/2006 Y11968 756.1 18.8 0.386 E0.141

— E0.015

— E0.01

—

— 0.138

09/26/2006 10/02/2006 Y29357 761.0 19.3 0.244 E0.032

—

—

—

—

—

— 0.117

10/08/2006 10/25/2006 Y06313 759.4 16.5 1.15 E0.149

—

—

—

—

—

— E0.102

10/20/2006 10/25/2006 Y16119 756.8 19.4 1.15

—

—

—

—

—

—

— 0.122

11/01/2006 11/17/2006 Y05161 761.6 16.5 E0.150

—

—

— E0.002

—

—

— E0.049

11/13/2006 11/17/2006 Y16096 715.9 16.9 E0.160

—

—

— E0.002

—

—

— E0.052

11/25/2006 12/15/2006 Y06011 706.9 14.5 0.214 E0.221

— E0.018

—

—

—

— E0.108

12/07/2006 12/15/2006 Y14520 762.7 15.7 0.415 E0.295

—

—

—

—

—

— E0.101

12/31/2006 01/19/2007 Y12858 765.7 10.1 0.372 E0.210

—

—

—

—

—

— 0.128

01/12/2007 01/19/2007 Y15936 760.5 9.4 0.257

—

—

—

—

—

—

— E0.090

01/24/2007 02/07/2007 Y15939 764.2 13.4 E0.127

—

—

—

—

—

—

— 0.174

02/05/2007 02/07/2007 Y12867 763.2 17.3 0.270 E0.013

—

—

—

—

—

— E0.084

02/17/2007 03/08/2007 Y16058 761.7 19.1 NA NA NA NA NA NA

— NA NA

03/01/2007 03/08/2007 Y12870 763.3 9.9 0.300 E0.040

—

—

—

—

—

—

—

03/13/2007 03/29/2007 Y16119 761.4 16.2 0.286 E0.028

—

—

—

—

—

— 0.149

03/25/2007 03/29/2007 Y16139 763.0 15.5 0.225 E0.017

—

—

—

—

—

— 0.182

04/06/2007 05/01/2007 Y05951 758.9 14.9 0.456 E0.141

—

—

—

—

—

— 0.223

04/18/2007 05/01/2007 Y12874 761.6 14.1 E0.197

—

—

—

—

—

—

— 0.188

04/30/2007 05/16/2007 Y16133 759.8 16.6 E0.180 E0.042

—

—

—

—

—

— 0.133

05/12/2007 05/16/2007 Y15939 761.1 15.5 0.226 E0.005

—

—

—

—

—

— E0.067

05/24/2007 06/14/2007 Y05161 759.0 17.3 NA NA NA NA NA NA

— NA NA

06/05/2007 06/14/2007 Y16119 759.0 16.4 0.585 E0.122

—

—

—

—

—

— 0.361

06/17/2007 07/11/2007 Y12870 758.2 18.0 0.283 E0.082

—

—

—

—

—

— 0.124

06/29/2007 07/11/2007 Y12874 758.9 19.8 NA NA NA NA NA NA

— NA NA

07/11/2007 07/11–13/2007 Y16052 745.0 20.8 0.062 E0.137

—

—

—

—

—

— 0.219
Appendix 169

Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Pressure 

(mm of 

Hg)

Temperature 

(°C)

Toluene

1,3-

Dichloropropane

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) o-Xylene Bromobenzene Naphthalene

[LRL] [0.08] [0.09] [0.50] [0.07] [0.09] [0.09] [0.07] [0.06] [0.09]

04/11/2006 04/13/2006 Y08490 760.8 15.6 E0.011 — E0.072 — — — — — —

04/23/2006 05/11/2006 Y08484 762.2 13.4 E0.075 — E0.352 E0.003 E0.006 E0.004 E0.002 — E0.00205/05/2006 05/11/2006 Y29329 761.1 15.7 0.097 — E0.061 E0.002 E0.004 E0.018 E0.001 — E0.00406/10/2006 07/12/2006 Y11968 757.5 17.8 E0.012 — E0.054 — — — — — E0.00206/22/2006 07/12/2006 Y15542 760.2 19.7 E0.024 — E0.022 — — — — — —07/04/2006 07/12/2006 Y10925 760.7 21.9 E0.007 — E0.044 — — — — — E0.00407/28/2006 08/14/2006 Y29328 759.6 25.1 E0.008 — — E0.001 E0.002 E0.003 — — E0.00208/09/2006 08/14/2006 Y29305 758.4 23.8 E0.009 — — — E0.002 E0.002 — — E0.00108/21/2006 09/08/2006 Y16549 758.5 21.7 E0.011 — E0.018 E0.001 E0.003 E0.004 — — E0.00109/02/2006 09/08/2006 Y16549 755.5 23.2 E0.011 — E0.016 E0.001 E0.003 E0.004 — — E0.00109/14/2006 10/02/2006 Y11968 756.1 18.8 E0.042 — E0.034 E0.004 E0.006 E0.017 E0.002 — E0.00509/26/2006 10/02/2006 Y29357 761.0 19.3 E0.010 — E0.014 — — E0.004 — — E0.00210/08/2006 10/25/2006 Y06313 759.4 16.5 E0.038 — E0.017 E0.002 E0.004 E0.016 E0.003 — E0.00210/20/2006 10/25/2006 Y16119 756.8 19.4 E0.018 — — E0.003 E0.005 E0.005 E0.002 — —

11/01/2006 11/17/2006 Y05161 761.6 16.5 E0.010 — — E0.001 E0.002 — E0.001 — E0.00211/13/2006 11/17/2006 Y16096 715.9 16.9 E0.010 — — E0.001 E0.002 — E0.001 — E0.00211/25/2006 12/15/2006 Y06011 706.9 14.5 E0.010 — — — — — — — —

12/07/2006 12/15/2006 Y14520 762.7 15.7 E0.009 — — — E0.005 — — — —12/31/2006 01/19/2007 Y12858 765.7 10.1 E0.009 — — — E0.002 — — — —01/12/2007 01/19/2007 Y15936 760.5 9.4 E0.013 — E0.002 — E0.007 E0.001 E0.002 — —01/24/2007 02/07/2007 Y15939 764.2 13.4 E0.016 — — E0.004 — — — — —02/05/2007 02/07/2007 Y12867 763.2 17.3 E0.011 — — — — — — — —02/17/2007 03/08/2007 Y16058 761.7 19.1 NA NA NA NA NA NA NA NA NA03/01/2007 03/08/2007 Y12870 763.3 9.9 E0.009 — — E0.001 E0.002 E0.002 — — —03/13/2007 03/29/2007 Y16119 761.4 16.2 E0.045 — E0.007 E0.003 E0.006 E0.007 E0.003 — —03/25/2007 03/29/2007 Y16139 763.0 15.5 E0.017 — — — — — — — —04/06/2007 05/01/2007 Y05951 758.9 14.9 E0.033 — — E0.001 E0.004 E0.006 E0.003 — E0.00304/18/2007 05/01/2007 Y12874 761.6 14.1 E0.007 — — — — — — — E0.00204/30/2007 05/16/2007 Y16133 759.8 16.6 E0.007 — — — — — — — E0.00105/12/2007 05/16/2007 Y15939 761.1 15.5 E0.014 — — — — — — — —05/24/2007 06/14/2007 Y05161 759.0 17.3 NA NA NA NA NA NA NA NA NA06/05/2007 06/14/2007 Y16119 759.0 16.4 0.082 — — E0.004 E0.005 — — — —06/17/2007 07/11/2007 Y12870 758.2 18.0 E0.019 — E0.012 E0.001 E0.002 E0.002 E0.001 — —06/29/2007 07/11/2007 Y12874 758.9 19.8 NA NA NA NA NA NA NA NA NA

07/11/2007 07/11–13/2007 Y16052 745.0 20.8 E0.004 — — — — — — — E0.002
170 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a con- centration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Pressure (mm of Hg) Temper- ature (°C) Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide Methyl tert- butyl ether (MTBE) 2-Butanone (methyl ethyl ketone) Trichloro- methane (chloroform) Benzene [LRL] [0.20] [0.60] [0.19] [0.09] [0.16] [0.10] [0.14] [0.09] [0.11] 07/23/2007 08/09/2007 Y16133 758.3 20.9 0.452 E0.077

—

—

—

—

—

— E0.091

08/04/2007 08/09/2007 Y16058 701.1 20.7 0.434 E0.039

—

—

—

—

—

— 0.758

08/16/2007 09/05/2007 Y05161 699.5 22.9 0.169 E0.014

—

—

—

—

—

— E0.104

08/28/2007 09/05/2007 Y16099 756.0 24.6 0.231 E0.143

—

—

—

—

—

— 0.121

09/09/2007 10/02/2007 Y14520 758.7 20.6 0.272 E0.039

—

—

—

—

—

— 0.173

09/21/2007 10/02/2007 Y16134 757.6 17.4 0.410 E0.064

—

—

—

—

—

— 0.168

10/03/2007 10/19/2007 Y12870 758.3 20.7 E0.106 E0.081

—

—

—

—

—

— 0.116

10/15/2007 10/19/2007 Y05951 758.0 17.1 E0.113

—

—

—

—

—

—

— 0.185

10/27/2007 11/13/2007 Y16099 762.5 20.3 0.424 E0.109

—

—

—

—

—

— 0.117

11/08/2007 11/13/2007 Y16052 761.9 15.2 0.279 E0.048

—

—

—

—

—

— 0.120

11/20/2007 12/06/2007 Y12867 759.9 13.2 2.03 E0.066 E0.031

—

—

—

—

— 0.469

12/02/2007 12/06/2007 Y12870 769.0 11.3 0.888 E0.029

— E0.009

—

—

—

— 0.149

12/14/2007 01/03/2008 Y16134 765.5 10.2 0.075 E0.036

—

—

—

—

—

— 0.222

12/26/2007 01/03/2008 Y16052 762.4 9.7 0.508 E0.017

—

—

—

—

—

— 0.112

01/07/2008 01/23/2008 Y12841 760.1 12.0 2.98 E0.041

— E0.016

—

—

—

— 0.323

01/19/2008 01/23/2008 Y16119 707.0 10.7 E0.156

—

—

—

—

—

—

— 0.136

01/31/2008 02/19/2008 Y16134 766.8 10.9 E0.067

—

—

—

—

—

—

— 0.265

02/12/2008 02/19/2008 Y12841 710.6 16.0 E0.154 E0.017

—

—

—

—

—

— 0.223

02/24/2008 03/13/2008 Y12883 716.2 12.2 0.225 E0.063

— E0.016

—

—

—

— 0.238

03/07/2008 03/13/2008 Y05161 706.1 15.9 0.490 E0.096

—

—

—

—

—

— E0.101

03/19/2008 04/03/2008 Y12867 763.9 12.8 E0.189 E0.022

—

—

—

—

—

— 0.143

03/31/2008 04/03/2008 Y16058 763.3 12.3 E0.094

—

—

—

—

—

—

— 0.191

04/12/2008 04/30/2008 Y05868 708.7 22.8 E0.076

—

—

—

—

—

—

— E0.082

04/24/2008 04/30/2008 Y16139 705.5 15.2 E0.042

—

—

—

—

—

—

— 0.177

05/06/2008 05/22/2008 Y05951 704.8 13.8 0.247

—

—

—

—

—

—

— 0.134

05/18/2008 05/22/2008 Y15989 699.5 24.1 0.234

—

—

—

—

—

—

— 0.129

05/30/2008 06/18/2008 Y16099 703.2 17.2 0.724 E0.101

—

—

—

—

—

— E0.093

06/11/2008 06/18/2008 Y12841 701.3 17.1 E0.062 E0.035

—

—

—

—

—

— E0.099

06/23/2008 07/14/2008 Y16119 700.3 21.8 E0.052 E0.022

—

—

—

—

—

— 0.117

07/05/2008 07/14/2008 Y05016 702.1 20.8 E0.071 E0.184

—

—

—

—

—

— 0.317

07/17/2008 08/14/2008 Y15939 704.2 20.7 0.588 E0.106

—

—

—

—

—

— 0.130

07/29/2008 08/14/2008 Y14520 705.3 21.4 0.472 E0.065

—

—

—

—

—

— 0.270

08/10/2008 08/28/2008 Y16096 704.8 22.4 0.206

—

—

—

—

—

—

— E0.060

08/22/2008 08/28/2008 Y12889 703.9 20.7 E0.171

—

—

—

—

—

—

— E0.087

09/03/2008 09/18/2008 Y16134 702.3 23.1 E0.128 E0.090

—

—

—

—

—

— 0.306
Appendix 171

Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Pressure 

(mm of 

Hg)

Temperature 

(°C)

Toluene

1,3-

Dichloropropane

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) o-Xylene Bromobenzene Naphthalene

[LRL] [0.08] [0.09] [0.50] [0.07] [0.09] [0.09] [0.07] [0.06] [0.09]

07/23/2007 08/09/2007 Y16133 758.3 20.9 E0.017 — — E0.002 E0.003 E0.004 E0.001 — —08/04/2007 08/09/2007 Y16058 701.1 20.7 E0.017 — — — E0.003 E0.007 — — E0.00208/16/2007 09/05/2007 Y05161 699.5 22.9 E0.006 — — — — — — — E0.00208/28/2007 09/05/2007 Y16099 756.0 24.6 E0.007 — — — E0.003 E0.003 — — E0.00509/09/2007 10/02/2007 Y14520 758.7 20.6 E0.010 — — — — E0.003 — — —09/21/2007 10/02/2007 Y16134 757.6 17.4 E0.022 — — — — E0.008 — — —10/03/2007 10/19/2007 Y12870 758.3 20.7 E0.005 — — — — — — — E0.00310/15/2007 10/19/2007 Y05951 758.0 17.1 E0.006 — — — — E0.001 — — —10/27/2007 11/13/2007 Y16099 762.5 20.3 E0.023 — — E0.002 E0.005 E0.002 E0.001 — —

11/08/2007 11/13/2007 Y16052 761.9 15.2 E0.016 — — E0.001 E0.003 — E0.001 — —11/20/2007 12/06/2007 Y12867 759.9 13.2 E0.033 — — E0.004 E0.009 E0.019 E0.003 E0.005 E0.003

12/02/2007 12/06/2007 Y12870 769.0 11.3 E0.019 — — E0.002 E0.007 E0.002 E0.002 — E0.00312/14/2007 01/03/2008 Y16134 765.5 10.2 E0.007 — — E0.001 E0.005 — E0.002 — E0.00312/26/2007 01/03/2008 Y16052 762.4 9.7 E0.011 — — E0.001 E0.003 E0.001 — — —01/07/2008 01/23/2008 Y12841 760.1 12.0 E0.053 — — E0.003 E0.007 E0.004 E0.002 — E0.00201/19/2008 01/23/2008 Y16119 707.0 10.7 E0.005 — — — — — — — E0.00501/31/2008 02/19/2008 Y16134 766.8 10.9 E0.007 — — — E0.006 — — — —02/12/2008 02/19/2008 Y12841 710.6 16.0 E0.013 — — — E0.003 — E0.001 — —02/24/2008 03/13/2008 Y12883 716.2 12.2 E0.008 — — — E0.002 — — — E0.00103/07/2008 03/13/2008 Y05161 706.1 15.9 E0.008 — — — — E0.005 — — E0.00903/19/2008 04/03/2008 Y12867 763.9 12.8 E0.007 — — E0.001 E0.003 — — — E0.00203/31/2008 04/03/2008 Y16058 763.3 12.3 E0.004 — — — — — — — E0.00204/12/2008 04/30/2008 Y05868 708.7 22.8 E0.005 — — — — — — — —04/24/2008 04/30/2008 Y16139 705.5 15.2 E0.009 — — — — — — — E0.00505/06/2008 05/22/2008 Y05951 704.8 13.8 E0.008 — — — — — — — —05/18/2008 05/22/2008 Y15989 699.5 24.1 E0.008 — — — E0.008 — — — —05/30/2008 06/18/2008 Y16099 703.2 17.2 E0.009 — — — — — — — E0.003

06/11/2008 06/18/2008 Y12841 701.3 17.1 E0.006 — — — — — — — E0.002

06/23/2008 07/14/2008 Y16119 700.3 21.8 E0.005 — — — — — — — —07/05/2008 07/14/2008 Y05016 702.1 20.8 — — — — — — — — —07/17/2008 08/14/2008 Y15939 704.2 20.7 E0.017 — — — E0.003 E0.002 — — —07/29/2008 08/14/2008 Y14520 705.3 21.4 E0.013 — — — — E0.002 — — —08/10/2008 08/28/2008 Y16096 704.8 22.4 E0.011 — — — — — — — —08/22/2008 08/28/2008 Y12889 703.9 20.7 E0.010 — — — — — — — —09/03/2008 09/18/2008 Y16134 702.3 23.1 E0.004 — — — — — — — —
172 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a con- centration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Pressure (mm of Hg) Temper- ature (°C) Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide Methyl tert- butyl ether (MTBE) 2-Butanone (methyl ethyl ketone) Trichloro- methane (chloroform) Benzene [LRL] [0.20] [0.60] [0.19] [0.09] [0.16] [0.10] [0.14] [0.09] [0.11] 09/15/2008 09/18/2008 Y12870 709.2 21.9 0.541 E0.008

—

—

—

—

—

— E0.071

09/27/2008 10/16/2008 Y05868 719.1 20.9 0.316 E0.041

—

—

—

—

—

— 0.146

10/09/2008 10/16/2008 Y16139 704.0 18.7 0.241

—

—

—

—

—

—

— 0.167

10/21/2008 11/06/2008 Y14520 761.5 16.6 E0.077 E0.010

—

—

—

—

—

— 0.126

11/02/2008 11/06/2008 Y12867 763.3 17.5 E0.029 E0.023

—

—

—

—

—

— 0.252

11/14/2008 12/10/2008 Y05016 760.0 21.3 0.234 E0.046

— E0.015

—

—

—

— 0.265

11/26/2008 12/10/2008 Y12867 758.5 16.2 0.317 E0.076

—

—

—

—

—

— E0.097

12/08/2008 12/31/2008 Y05908 765.3 13.3 E0.178 E0.011

—

—

—

—

—

— E0.097

12/20/2008 12/31/2008 Y13939 766.1 9.2 E0.146

—

—

—

—

—

—

— E0.096

01/01/2009 01/21/2009 Y05016 762.0 11.4 E0.184 E0.169

— E0.036

—

—

—

— 0.227

01/13/2009 01/21/2009 Y16058 765.3 17.8 0.421 E0.052

—

—

— E0.04

—

— 0.809

01/25/2009 02/11/2009 Y15936 762.8 11.6 E0.031 E0.015

—

—

—

—

—

— 0.144

02/06/2009 02/11/2009 Y16119 761.0 13.2 E0.064

—

—

—

—

—

—

— E0.099

02/18/2009 03/04/2009 Y16058 766.3 11.0 0.538 E0.031

—

—

— 0.12

—

— 0.201

03/02/2009 03/04/2009 Y12889 763.0 18.3 0.361

—

—

—

—

—

—

— 0.163

03/14/2009 04/01/2009 Y14520 759.5 12.9 0.784 E0.308

— E0.042

—

—

— E0.044 0.174

03/26/2009 04/01/2009 Y16134 759.0 12.7 0.425 E0.059

—

—

—

—

—

— 0.355

04/07/2009 04/23/2009 Y15936 762.5 13.7 0.724 E0.177

— E0.017

—

—

—

— E0.073

04/19/2009 04/23/2009 Y12841 760.5 25.2 0.542 E0.062

—

—

—

—

—

— 0.208

05/01/2009 05/21/2009 Y16058 761.8 16.9 0.477 E0.075

— E0.013

—

—

—

— 0.173

05/13/2009 05/21/2009 Y05951 758.3 16.6 E0.139

—

— E0.025

—

—

—

— E0.096

05/25/2009 06/11/2009 Y16096 759.7 16.0 0.255

—

—

—

—

—

—

— E0.064

06/06/2009 06/11/2009 Y16139 760.5 17.1 E0.092

—

—

—

—

—

—

— 0.127

06/18/2009 07/09/2009 Y12883 756.7 17.9 E0.192 E0.024

— E0.015

—

—

—

— 0.261

06/30/2009 07/09/2009 Y12874 757.3 20.8 0.258 E0.087

— E0.012

—

—

—

— E0.071

07/12/2009 07/29/2009 Y05868 760.2 24.8 E0.137

—

—

—

—

—

—

— 0.120

07/24/2009 07/29/2009 Y15939 759.0 16.7 E0.171 E0.022

—

—

—

—

—

— 0.227
Appendix 173

Table B3B. Quality-control travel blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm of Hg, millimeters of mercury; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; °C, degree Celsius; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Pressure 

(mm of 

Hg)

Temperature 

(°C)

Toluene

1,3-

Dichloropropane

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) o-Xylene Bromobenzene Naphthalene

[LRL] [0.08] [0.09] [0.50] [0.07] [0.09] [0.09] [0.07] [0.06] [0.09]

09/15/2008 09/18/2008 Y12870 709.2 21.9 E0.009 — — — E0.003 — — — —09/27/2008 10/16/2008 Y05868 719.1 20.9 E0.006 — — — — — — — —10/09/2008 10/16/2008 Y16139 704.0 18.7 E0.008 — — — — — — — —10/21/2008 11/06/2008 Y14520 761.5 16.6 — — — — — — — — —

11/02/2008 11/06/2008 Y12867 763.3 17.5 E0.004 — — — — — — — —11/14/2008 12/10/2008 Y05016 760.0 21.3 E0.025 — — — — E0.004 — — —11/26/2008 12/10/2008 Y12867 758.5 16.2 E0.027 — — E0.001 E0.002 E0.003 E0.001 — —

12/08/2008 12/31/2008 Y05908 765.3 13.3 E0.006 — — E0.001 E0.002 — — — E0.00312/20/2008 12/31/2008 Y13939 766.1 9.2 E0.006 — — E0.001 E0.001 E0.002 E0.002 — —01/01/2009 01/21/2009 Y05016 762.0 11.4 E0.076 — E0.044 E0.005 — E0.015 — — —01/13/2009 01/21/2009 Y16058 765.3 17.8 E0.023 — — — — E0.004 — — —01/25/2009 02/11/2009 Y15936 762.8 11.6 E0.006 — — — — — — — —02/06/2009 02/11/2009 Y16119 761.0 13.2 E0.009 — — — — — — — —02/18/2009 03/04/2009 Y16058 766.3 11.0 E0.027 — E0.018 — E0.003 E0.008 — — E0.00403/02/2009 03/04/2009 Y12889 763.0 18.3 E0.011 — — — E0.002 — — — —03/14/2009 04/01/2009 Y14520 759.5 12.9 E0.058 — E0.054 — — E0.019 — — E0.00203/26/2009 04/01/2009 Y16134 759.0 12.7 E0.007 — E0.009 — — — — — —04/07/2009 04/23/2009 Y15936 762.5 13.7 E0.045 E0.008 E0.023 E0.002 E0.004 E0.023 — — E0.00604/19/2009 04/23/2009 Y12841 760.5 25.2 E0.022 — — — — — — — E0.00405/01/2009 05/21/2009 Y16058 761.8 16.9 E0.030 — — — — — — — E0.00105/13/2009 05/21/2009 Y05951 758.3 16.6 E0.003 — — — — — — — —05/25/2009 06/11/2009 Y16096 759.7 16.0 E0.018 — — — — — — — E0.00306/06/2009 06/11/2009 Y16139 760.5 17.1 E0.008 — — — — — — — E0.00106/18/2009 07/09/2009 Y12883 756.7 17.9 E0.016 — E0.015 — — — — — E0.00206/30/2009 07/09/2009 Y12874 757.3 20.8 E0.012 — — — — — — — —07/12/2009 07/29/2009 Y05868 760.2 24.8 E0.019 — — — — — — — —07/24/2009 07/29/2009 Y15939 759.0 16.7 E0.023 — — — E0.005 — — — —
174 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Carbon disulfide 2-Butanone (methyl ethyl ketone) Tetrachloro- methane Benzene 1,1,2- Trichloroethane [LRL] [0.20] [0.06] [0.12] [0.19] [0.16] [0.14] [0.11] [0.11] [0.06] 10/12/2003 10/16/2003 Y29305 0.299

—

—

— E0.015

—

— 0.110

—

10/24/2003 11/21/2003 Y29357 E0.112

—

—

—

—

—

— 0.151

—

11/05/2003 11/21/2003 Y29324 E0.094

—

—

—

—

—

— E0.092

—

11/17/2003 11/21/2003 Y10960 E0.054

—

—

—

—

—

— 0.115

—

11/29/2003 12/18/2003 Y11396 E0.035

—

—

—

—

—

— E0.006

—

12/11/2003 12/18/2003 Y12028 E0.099

—

—

—

—

—

— 0.117

—

12/23/2003 01/29/2004 Y16207 E0.033

—

—

—

—

—

— E0.035

—

01/04/2004 01/29/2004 Y26663 E0.038

—

—

—

—

—

— E0.078

—

01/14/2004 02/06/2004 Y29342 E0.031

—

—

—

—

—

— E0.061

—

01/28/2004 02/06/2004 Y29327 E0.027

—

—

—

—

—

— E0.045

—

02/09/2004 02/27/2004 Y15630 0.200

—

—

— E0.003

—

— 0.143

—

02/21/2004 02/27/2004 Y16229 0.231

—

— E0.016 E0.006

—

— 0.213

—

03/04/2004 03/26/2004 Y26403 E0.054

—

—

—

—

—

— 0.150

—

03/16/2004 03/26/2004 Y06313 E0.141

—

—

—

—

—

— 0.110

—

03/28/2004 04/16/2004 Y11420 E0.060

—

—

— E0.002

—

— E0.036

—

04/09/2004 04/16/2004 Y16108 E0.106

—

—

—

—

—

— 0.143

—

04/21/2004 05/06/2004 Y11456 0.415

—

—

—

—

—

— 0.133

—

05/03/2004 05/06/2004 Y11867 0.482

—

—

— E0.020 E0.101

— E0.093

—

05/15/2004 06/04/2004 Y11867 0.208

—

—

—

—

—

— E0.041

—

05/27/2004 06/04/2004 Y16207 E0.083

—

—

—

—

—

— E0.104

—

06/08/2004 06/28/2004 Y11426 0.255

—

—

— E0.007

—

— 0.207

—

06/20/2004 06/28/2004 Y26403 E0.177

—

—

—

—

—

— 0.165

—

07/02/2004 07/21/2004 Y11861 E0.125

—

—

—

—

—

— 0.123

—

07/14/2004 07/21/2004 Y16229 E0.116

—

—

—

—

—

— 0.187

—

07/26/2004 08/25/2004 Y16246 E0.031

—

—

—

—

—

— E0.038

—

08/19/2004 08/25/2004 Y26166 0.368

—

—

— E0.002

—

— E0.089

—

08/31/2004 09/21/2004 Y16229 E0.126

—

—

— E0.001

—

— E0.069

—

09/12/2004 09/21/2004 Y11241 0.562

—

—

— E0.002

—

— 0.119

—

09/23/2004 10/13/2004 Y07941 0.381

—

—

—

—

—

— 0.168

—

10/06/2004 10/13/2004 Y10960 E0.070

—

—

—

—

—

— E0.102

—

10/18/2004 11/10/2004 Y06624 E0.151

—

—

—

—

—

— E0.088

—

10/30/2004 11/10/2004 Y26144 0.132

—

—

—

—

—

— E0.040

—

11/23/2004 12/08/2004 Y26403 0.081

—

—

—

—

—

— E0.072

—

12/05/2004 12/08/2004 Y11426 0.137

—

—

—

—

—

— 0.253

—

12/28/2004 01/20/2005 Y29305 0.081

—

—

—

—

—

— E0.105

—

Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
Appendix 175

Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Toluene

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) 1,1,2,2- Tetrachloro- ethane o-Xylene Naphthalene 1,2,3- Trichloro- benzene

[LRL] [0.08] [0.5] [0.07] [0.09] [0.09] [0.07] [0.07] [0.09] [0.05]

10/12/2003 10/16/2003 Y29305 E0.015 — E0.002 E0.005 — — — — —10/24/2003 11/21/2003 Y29357 E0.014 — — E0.002 — — — — —

11/05/2003 11/21/2003 Y29324 E0.016 — — — — — — — —11/17/2003 11/21/2003 Y10960 E0.006 — — — — — — — —11/29/2003 12/18/2003 Y11396 — — — — — — — — —12/11/2003 12/18/2003 Y12028 E0.002 — — — — — — — —

12/23/2003 01/29/2004 Y16207 E0.002 — — — — — — — —01/04/2004 01/29/2004 Y26663 E0.003 — — — — — — — —01/14/2004 02/06/2004 Y29342 E0.003 — — — — — — — —01/28/2004 02/06/2004 Y29327 E0.002 — — — — — — — —02/09/2004 02/27/2004 Y15630 E0.011 — E0.001 E0.001 E0.001 — E0.001 E0.001 —02/21/2004 02/27/2004 Y16229 E0.009 — E0.001 E0.003 — — — E0.004 —03/04/2004 03/26/2004 Y26403 E0.003 — — — — — — E0.005 —03/16/2004 03/26/2004 Y06313 E0.003 — — — — — — — —03/28/2004 04/16/2004 Y11420 E0.003 — — — — — — — —04/09/2004 04/16/2004 Y16108 E0.003 — — E0.001 — — — E0.002 —04/21/2004 05/06/2004 Y11456 E0.015 — E0.001 E0.008 E0.005 — E0.003 E0.006 —05/03/2004 05/06/2004 Y11867 E0.035 — E0.006 E0.022 E0.011 — E0.005 E0.005 —05/15/2004 06/04/2004 Y11867 E0.005 — — E0.002 — — — — —05/27/2004 06/04/2004 Y16207 E0.004 — — — — — — E0.003 —06/08/2004 06/28/2004 Y11426 E0.034 — E0.002 E0.009 E0.007 — E0.008 E0.007 —06/20/2004 06/28/2004 Y26403 E0.004 — — E0.003 — — — E0.007 —07/02/2004 07/21/2004 Y11861 E0.005 — — — — — — E0.002 —07/14/2004 07/21/2004 Y16229 E0.003 — E0.002 E0.004 — — — E0.004 —07/26/2004 08/25/2004 Y16246 E0.001 — — E0.001 — — — E0.001 —08/19/2004 08/25/2004 Y26166 E0.004 — E0.001 E0.002 — — E0.001 E0.004 —08/31/2004 09/21/2004 Y16229 E0.001 — — E0.001 E0.001 — — E0.004 —09/12/2004 09/21/2004 Y11241 E0.015 — — E0.002 E0.001 — E0.002 E0.003 —09/23/2004 10/13/2004 Y07941 E0.024 — — E0.007 E0.003 — E0.002 E0.006 —10/06/2004 10/13/2004 Y10960 E0.004 — — E0.001 E0.001 — E0.001 E0.003 —10/18/2004 11/10/2004 Y06624 E0.026 — E0.002 E0.004 E0.003 — E0.006 E0.010 —10/30/2004 11/10/2004 Y26144 E0.004 — — E0.001 — — — E0.005 —

11/23/2004 12/08/2004 Y26403 E0.024 — E0.002 E0.006 — — — E0.005 —

12/05/2004 12/08/2004 Y11426 E0.013 — E0.001 E0.005 — — E0.002 E0.005 —12/28/2004 01/20/2005 Y29305 E0.013 — — — — — — E0.007 —
176 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Carbon disulfide 2-Butanone (methyl ethyl ketone) Tetrachloro- methane Benzene 1,1,2- Trichloroethane [LRL] [0.20] [0.06] [0.12] [0.19] [0.16] [0.14] [0.11] [0.11] [0.06] 01/10/2005 01/20/2005 Y29342 0.087

—

—

—

—

—

— 0.142

—

01/22/2005 02/10/2005 Y07941 0.075

—

—

—

—

—

— 0.111

—

02/03/2005 02/10/2005 Y06586 0.047

—

—

—

—

—

— E0.073

—

02/15/2005 03/03/2005 Y15649 0.073

—

—

—

—

—

— E0.065

—

02/27/2005 03/03/2005 Y26830 0.073

—

—

—

—

—

— E0.086

—

03/11/2005 03/30/2005 Y10960 0.049

—

—

—

—

—

— 0.119

—

03/23/2005 03/30/2005 Y26403 0.148

—

—

—

—

—

— E0.102

—

04/04/2005 04/20/2005 Y11258 0.206

—

—

—

—

—

— 0.226

—

04/16/2005 04/20/2005 Y15630 0.055

—

—

— E0.002

—

— E0.092

—

04/28/2005 05/17/2005 Y11968 0.107

—

—

—

—

—

— 0.163

—

05/10/2005 05/17/2005 Y11984 0.309

—

—

—

—

—

— 1.416

—

06/03/2005 06/20/2005 Y11241 0.650

—

—

—

—

—

— 0.203

—

06/15/2005 06/20/2005 Y16150 1.200

—

—

—

—

—

— 0.343

—

07/09/2005 07/28/2005 Y11429 0.477

—

—

—

—

—

— 0.194

—

07/25/2005 07/28/2005 Y29327 0.654

—

—

—

—

—

— E0.107

—

08/02/2005 08/17/2005 Y29380 0.289

—

—

—

—

—

— 0.334

—

08/14/2005 08/17/2005 Y29327 0.099

—

—

—

—

—

— 0.246

—

08/26/2005 09/14/2005 Y11426 0.114

—

—

—

—

—

— 0.158

—

09/07/2005 09/14/2005 Y29380 E0.040

—

—

—

—

—

— 0.212

—

09/19/2005 10/05/2005 Y26663 0.259

—

—

—

—

—

— 0.159

—

10/01/2005 10/05/2005 Y11458 E0.140

—

—

—

—

—

— E0.022

—

10/13/2005 11/02/2005 Y10925 0.413

—

—

—

—

—

— 0.146

—

10/25/2005 11/02/2005 Y26144 E0.070

—

—

—

—

—

— E0.057

—

11/06/2005 11/29/2005 Y11420 E0.030

—

—

—

—

—

— E0.108

—

11/18/2005 11/29/2005 Y10925 E0.020

—

—

—

—

—

— 0.168

—

12/12/2005 01/04/2006 Y11861 E0.080

—

—

—

—

—

— E0.108

—

12/24/2005 01/04/2006 Y11396 E0.040

—

—

—

—

—

— E0.073

—

01/06/2006 01/24/2006 Y11968 E0.030

—

—

—

—

—

— E0.010

—

01/17/2006 01/24/2006 Y07567

—

—

—

—

—

—

— 0.154

—

01/29/2006 02/15/2006 Y07567 E0.080

—

—

—

—

—

— 0.240

—

02/10/2006 02/15/2006 Y11407 0.020

—

—

—

—

—

— E0.083

—

02/22/2006 03/09/2006 Y06586 0.018

—

—

—

—

—

— E0.064

—

03/05/2006 03/09/2006 Y30114 0.975 E0.033

—

— E0.007

—

— E0.083

—

03/30/2006 04/13/2006 Y12028 0.044

—

—

— E0.001

—

— 0.147

—

04/11/2006 04/13/2006 Y15649 0.053

—

—

—

—

—

— E0.102

—
Appendix 177

Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Toluene

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) 1,1,2,2- Tetrachloro- ethane o-Xylene Naphthalene 1,2,3- Trichloro- benzene

[LRL] [0.08] [0.5] [0.07] [0.09] [0.09] [0.07] [0.07] [0.09] [0.05]

01/10/2005 01/20/2005 Y29342 E0.015 — E0.003 E0.007 — — — E0.008 —01/22/2005 02/10/2005 Y07941 E0.009 — E0.002 — — — — E0.006 —02/03/2005 02/10/2005 Y06586 E0.013 — — — — — — — —02/15/2005 03/03/2005 Y15649 E0.014 — — — — — — — —02/27/2005 03/03/2005 Y26830 E0.005 — — — — — — E0.008 —

03/11/2005 03/30/2005 Y10960 E0.007 — — E0.002 — E0.002 — E0.001 —

03/23/2005 03/30/2005 Y26403 E0.007 — — — — — — E0.001 —04/04/2005 04/20/2005 Y11258 E0.040 — E0.005 E0.019 E0.016 — E0.006 E0.004 —04/16/2005 04/20/2005 Y15630 E0.009 — — — — — — — —04/28/2005 05/17/2005 Y11968 E0.006 — — E0.004 E0.008 — — — —05/10/2005 05/17/2005 Y11984 E0.003 — — — — — — — —06/03/2005 06/20/2005 Y11241 E0.007 — — — — — — — —06/15/2005 06/20/2005 Y16150 E0.011 — — E0.003 — — — E0.002 —07/09/2005 07/28/2005 Y11429 E0.008 — — — — — — E0.003 —07/25/2005 07/28/2005 Y29327 E0.007 — — — — — — — —08/02/2005 08/17/2005 Y29380 E0.055 — E0.008 E0.021 — — E0.007 — —08/14/2005 08/17/2005 Y29327 E0.006 — — E0.001 E0.004 — — — —08/26/2005 09/14/2005 Y11426 E0.007 — — — — — — — —09/07/2005 09/14/2005 Y29380 E0.004 — — — — — — — —09/19/2005 10/05/2005 Y26663 E0.005 — — — — — — — —10/01/2005 10/05/2005 Y11458 — — — — — — — — —10/13/2005 11/02/2005 Y10925 E0.008 — E0.008 E0.014 — — — — —10/25/2005 11/02/2005 Y26144 E0.009 — — — — — — — —

11/06/2005 11/29/2005 Y11420 E0.009 — — — — — — — —11/18/2005 11/29/2005 Y10925 E0.009 — E0.011 E0.012 — — E0.009 — —

12/12/2005 01/04/2006 Y11861 E0.007 — — E0.008 E0.009 — E0.008 — —12/24/2005 01/04/2006 Y11396 E0.009 — — E0.008 E0.008 — — — —01/06/2006 01/24/2006 Y11968 E0.009 — — E0.008 E0.009 — — — —01/17/2006 01/24/2006 Y07567 E0.007 — — — — — — — —01/29/2006 02/15/2006 Y07567 E0.001 — — — — — — — —02/10/2006 02/15/2006 Y11407 E0.002 — — — — — — — —02/22/2006 03/09/2006 Y06586 E0.001 — — — — — — — —03/05/2006 03/09/2006 Y30114 E0.005 — — — — — — — —03/30/2006 04/13/2006 Y12028 E0.002 — — — — — — — —

04/11/2006 04/13/2006 Y15649 E0.004 — — — — — — — —
178 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Carbon disulfide 2-Butanone (methyl ethyl ketone) Tetrachloro- methane Benzene 1,1,2- Trichloroethane [LRL] [0.20] [0.06] [0.12] [0.19] [0.16] [0.14] [0.11] [0.11] [0.06] 04/23/2006 05/11/2006 Y29357 0.132

—

—

— E0.021

—

— E0.089

—

05/05/2006 05/11/2006 Y26830 0.029

—

—

—

—

—

— E0.034

—

06/10/2006 07/12/2006 Y11396 0.052

—

—

—

—

—

— E0.084

—

06/22/2006 07/12/2006 Y11861 0.297

—

—

—

—

—

— 0.361

—

07/04/2006 07/12/2006 Y16207 0.297

—

—

—

—

—

— 0.248

—

07/28/2006 08/14/2006 Y25959

—

—

—

—

—

—

— E0.090

—

08/09/2006 08/14/2006 Y10925

—

—

—

—

—

—

— E0.058

—

08/21/2006 09/08/2006 Y29357

—

—

—

—

—

— E0.074

— E0.003

09/02/2006 09/08/2006 Y25997 0.054

—

—

—

—

—

— E0.074

—

09/14/2006 10/02/2006 Y12870 0.064

—

—

—

—

—

— E0.104

—

09/26/2006 10/02/2006 Y16246 0.167

—

—

—

—

—

— 0.125

—

10/08/2006 10/25/2006 Y06624

—

—

—

—

—

—

— 0.192

—

10/20/2006 10/25/2006 Y29328 E0.026

—

—

—

—

—

— E0.104

—

11/01/2006 11/17/2006 Y16096 E0.075

—

—

—

—

—

— E0.053

—

11/13/2006 11/17/2006 Y16096 E0.075

—

—

—

—

—

— E0.053

—

11/25/2006 12/15/2006 Y26371 E0.060

—

—

—

—

—

— E0.064

—

12/07/2006 12/15/2006 Y16246 E0.018

—

—

—

—

—

— E0.103

—

12/31/2006 01/19/2007 Y16246 0.305

—

—

—

—

—

— 0.196

—

01/12/2007 01/19/2007 Y29328 0.880

—

—

—

—

—

— 0.150

—

01/24/2007 02/07/2007 Y07567 E0.087

—

—

—

—

—

— E0.099

—

02/05/2007 02/07/2007 Y08484 E0.074

—

—

—

—

—

— E0.062

—

02/17/2007 03/08/2007 Y11458

—

—

—

—

—

—

— 0.160

—

03/01/2007 03/08/2007 Y06581 E0.081

—

—

—

—

—

—

—

—

03/13/2007 03/29/2007 Y29329 0.132

—

—

—

—

—

— 0.159

—

03/25/2007 03/29/2007 Y08484 0.139

—

—

—

—

—

— E0.107

—

04/06/2007 05/01/2007 Y11093 E0.042

—

—

—

—

—

— E0.100

—

04/18/2007 05/01/2007 Y16246 0.234

—

—

—

—

—

— 0.194

—

04/30/2007 05/16/2007 Y07941 E0.092

—

—

—

—

—

— 0.119

—

05/12/2007 05/16/2007 Y06392 E0.037

—

—

—

—

—

— E0.045

—

05/24/2007 06/14/2007 Y16207 0.176

—

—

—

—

—

— E0.079

—

06/05/2007 06/14/2007 Y16557 0.184

—

—

—

—

—

— E0.083

—

06/17/2007 07/11/2007 Y11458 0.175

—

—

—

—

—

— E0.067

—

06/29/2007 07/11/2007 Y26371 0.176

—

—

—

—

—

— E0.039

—

07/11/2007 7/11–13/2007 Y26663 0.139

—

—

—

—

—

— 0.198

—

07/23/2007 08/09/2007 Y07941

—

—

—

—

—

—

— 0.114

—
Appendix 179

Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Toluene

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) 1,1,2,2- Tetrachloro- ethane o-Xylene Naphthalene 1,2,3- Trichloro- benzene

[LRL] [0.08] [0.5] [0.07] [0.09] [0.09] [0.07] [0.07] [0.09] [0.05]

04/23/2006 05/11/2006 Y29357 — — — — — — — — —05/05/2006 05/11/2006 Y26830 — — — — — — — — —06/10/2006 07/12/2006 Y11396 E0.001 — — — — — — — —06/22/2006 07/12/2006 Y11861 E0.002 — — — — — — — —07/04/2006 07/12/2006 Y16207 E0.002 E0.009 — — — — — — —07/28/2006 08/14/2006 Y25959 E0.007 — — — — — — — —08/09/2006 08/14/2006 Y10925 E0.005 — — — — — — — —08/21/2006 09/08/2006 Y29357 — — E0.001 — — — — — —09/02/2006 09/08/2006 Y25997 E0.003 — — E0.001 — — — — —09/14/2006 10/02/2006 Y12870 E0.001 — — — — — — — —09/26/2006 10/02/2006 Y16246 E0.005 — — — — — — E0.002 —10/08/2006 10/25/2006 Y06624 — — — — — — — — —10/20/2006 10/25/2006 Y29328 E0.003 — — — — — — — —

11/01/2006 11/17/2006 Y16096 E0.012 — — — — — — — —11/13/2006 11/17/2006 Y16096 E0.012 — — — — — — — —11/25/2006 12/15/2006 Y26371 E0.013 — — — — — — — —

12/07/2006 12/15/2006 Y16246 E0.002 — — — — — — — —12/31/2006 01/19/2007 Y16246 E0.009 — — — — — — — —01/12/2007 01/19/2007 Y29328 E0.004 — — — — — — — —01/24/2007 02/07/2007 Y07567 E0.007 — — — — — — — —02/05/2007 02/07/2007 Y08484 E0.005 — — — — — — — —02/17/2007 03/08/2007 Y11458 E0.004 — — — — — — — —03/01/2007 03/08/2007 Y06581 E0.003 — — — — — — — —03/13/2007 03/29/2007 Y29329 — — — — — — — — —03/25/2007 03/29/2007 Y08484 — — — — — — — — —04/06/2007 05/01/2007 Y11093 E0.003 — — — — — — — —04/18/2007 05/01/2007 Y16246 — — — — — — — — —04/30/2007 05/16/2007 Y07941 E0.006 — — — — — — — —05/12/2007 05/16/2007 Y06392 E0.007 — — — — — — — —05/24/2007 06/14/2007 Y16207 — — — — — — — E0.003 —06/05/2007 06/14/2007 Y16557 E0.003 — — — — — — — —06/17/2007 07/11/2007 Y11458 E0.003 — — — — — — E0.002 —06/29/2007 07/11/2007 Y26371 E0.003 — — — — — — — —

07/11/2007 7/11–13/2007 Y26663 E0.003 — — — — — — — —

07/23/2007 08/09/2007 Y07941 E0.002 — — — — — — — —
180 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Carbon disulfide 2-Butanone (methyl ethyl ketone) Tetrachloro- methane Benzene 1,1,2- Trichloroethane [LRL] [0.20] [0.06] [0.12] [0.19] [0.16] [0.14] [0.11] [0.11] [0.06] 08/04/2007 08/09/2007 Y26403 E0.063

—

—

—

—

—

— 0.132

—

08/16/2007 09/05/2007 Y11426

—

—

—

—

—

—

— 0.142

—

08/28/2007 09/05/2007 Y06313

—

—

—

—

—

—

— E0.045

—

09/09/2007 10/02/2007 Y13692 E0.062

—

—

—

—

—

— E0.053

—

09/21/2007 10/02/2007 Y16019 E0.051

—

—

—

—

—

— E0.048

—

10/03/2007 10/19/2007 Y08939 E0.055

—

—

—

—

—

— E0.105

—

10/15/2007 10/19/2007 Y29313

—

—

—

—

—

—

— 0.202

—

10/27/2007 11/13/2007 Y06624 E0.038

—

—

—

—

—

— 0.132

—

11/08/2007 11/13/2007 Y11241

—

—

—

—

—

—

— 0.135

—

11/20/2007 10/02/2006 Y26404 E0.048

—

—

—

—

—

— 0.327

—

12/02/2007 12/06/2007 Y08484 E0.022

—

—

—

—

—

— E0.072

—

12/14/2007 01/03/2008 Y08484

—

—

—

—

—

—

— E0.081

—

12/26/2007 01/03/2008 Y06624 E0.037

—

—

—

—

—

— 0.118

—

01/07/2008 01/23/2008 Y08490 E0.006

—

—

—

—

—

— 0.137

—

01/19/2008 01/23/2008 Y26830

—

—

—

—

—

—

—

—

—

01/31/2008 02/19/2008 Y07567 E0.024

—

—

—

—

—

— 0.128

—

02/12/2008 02/19/2008 Y07567

—

—

—

—

—

—

— 0.200

—

02/24/2008 03/13/2008 Y26404 E0.059

—

—

—

—

—

— 0.228

—

03/07/2008 03/13/2008 Y16557 0.152

—

—

—

—

—

— E0.081

—

03/19/2008 04/03/2008 Y29328 E0.061

—

—

—

—

—

— 0.237

—

03/31/2008 04/03/2008 Y10925 E0.044

—

—

—

—

—

— 0.155

—

04/12/2008 04/30/2008 Y26830 E0.015

—

—

—

—

—

— E0.062

—

04/24/2008 04/30/2008 Y04390 E0.029

—

—

—

—

—

— E0.069

—

05/06/2008 05/22/2008 Y16150 E0.080

—

—

—

—

—

— E0.098

—

05/18/2008 05/22/2008 Y06581 E0.039

—

—

—

—

—

— E0.081

—

05/30/2008 06/18/2008 Y08484 0.257

—

—

—

—

—

— E0.069

—

06/01/2008 06/18/2008 Y06624 0.257

—

—

—

—

—

— E0.069

—

06/23/2008 07/14/2008 Y12883

—

— 0.32

—

—

—

—

—

—

07/05/2008 07/14/2008 Y06313

—

—

—

—

—

—

— E0.104

—

07/17/2008 08/14/2008 Y26144 E0.021

—

—

—

—

—

— 0.206

—

07/29/2008 08/14/2008 Y26416 0.942

—

—

—

—

—

— 0.292

—

08/10/2008 08/28/2008 Y06581 0.108

—

—

—

—

—

— E0.086

—

08/22/2008 08/28/2008 Y16246 E0.015

—

—

—

—

—

— E0.038

—

09/03/2008 09/18/2008 Y16246 E0.026

—

—

—

—

—

— E0.093

—

09/15/2008 09/18/2008 Y15649 E0.014

—

—

—

—

—

— E0.057

—
Appendix 181

Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Toluene

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) 1,1,2,2- Tetrachloro- ethane o-Xylene Naphthalene 1,2,3- Trichloro- benzene

[LRL] [0.08] [0.5] [0.07] [0.09] [0.09] [0.07] [0.07] [0.09] [0.05]

08/04/2007 08/09/2007 Y26403 E0.002 — — — — — — — —08/16/2007 09/05/2007 Y11426 E0.004 — — — — — — — —08/28/2007 09/05/2007 Y06313 — — — — — — — — —09/09/2007 10/02/2007 Y13692 E0.004 — — — — — — — —09/21/2007 10/02/2007 Y16019 E0.004 — — — — — — — —10/03/2007 10/19/2007 Y08939 E0.002 — — — — — — — —10/15/2007 10/19/2007 Y29313 — — — — — — — — —10/27/2007 11/13/2007 Y06624 E0.004 — — — — — — E0.001 —

11/08/2007 11/13/2007 Y11241 E0.003 — — — — — — — —11/20/2007 10/02/2006 Y26404 E0.002 — — — — — — — E0.001

12/02/2007 12/06/2007 Y08484 E0.003 — — E0.003 — — — — —12/14/2007 01/03/2008 Y08484 E0.005 — — — — — — — —12/26/2007 01/03/2008 Y06624 E0.002 — — — — — — — —01/07/2008 01/23/2008 Y08490 E0.003 — — — — — — — —01/19/2008 01/23/2008 Y26830 — — — — — — — — —01/31/2008 02/19/2008 Y07567 E0.003 — — — — — — — —02/12/2008 02/19/2008 Y07567 — — — — — — — — —02/24/2008 03/13/2008 Y26404 E0.002 — — — — — — — —03/07/2008 03/13/2008 Y16557 E0.003 — — — — — — — —03/19/2008 04/03/2008 Y29328 E0.002 — — — — — — — —03/31/2008 04/03/2008 Y10925 E0.001 — — — — — — E0.001 —04/12/2008 04/30/2008 Y26830 — — — — — — — E0.002 —04/24/2008 04/30/2008 Y04390 — — — — — — — — —05/06/2008 05/22/2008 Y16150 — — — — — — — — —05/18/2008 05/22/2008 Y06581 — — — — — — — — —05/30/2008 06/18/2008 Y08484 — — — — — — — — —06/01/2008 06/18/2008 Y06624 — — — — — — — — —06/23/2008 07/14/2008 Y12883 — — — — — — — — —07/05/2008 07/14/2008 Y06313 — — — — — — — — —07/17/2008 08/14/2008 Y26144 — — — — — — — — —07/29/2008 08/14/2008 Y26416 E0.040 — — — — — — — —08/10/2008 08/28/2008 Y06581 — — E0.002 — — — — — —08/22/2008 08/28/2008 Y16246 — — — — — — — — —09/03/2008 09/18/2008 Y16246 E0.001 — — — — — — — —09/15/2008 09/18/2008 Y15649 — — — — — — — — —
182 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene tert-Butyl alcohol 2- Propenenitrile (acrylonitrile) Carbon disulfide 2-Butanone (methyl ethyl ketone) Tetrachloro- methane Benzene 1,1,2- Trichloroethane [LRL] [0.20] [0.06] [0.12] [0.19] [0.16] [0.14] [0.11] [0.11] [0.06] 09/27/2008 10/16/2008 Y08939 E0.069

—

—

—

—

—

— E0.075

—

10/09/2008 10/16/2008 Y06313 E0.082

—

—

—

—

—

— E0.062

—

10/21/2008 11/06/2008 Y07941

—

—

—

—

—

—

— E0.076

—

11/02/2008 11/06/2008 Y25997 0.110 E0.027

—

—

—

—

— 0.324

—

11/14/2008 12/10/2008 Y26208 E0.036

—

—

—

—

—

— 0.252

—

11/26/2008 12/10/2008 Y26830

—

—

—

—

—

—

— E0.050

—

12/08/2008 12/31/2008 Y16108 0.125

—

—

—

—

—

— 0.147

—

12/20/2008 12/31/2008 Y26208 E0.083

—

—

—

—

—

— E0.080

—

01/01/2009 01/21/2009 Y10960

—

—

—

—

—

—

— 0.135

—

01/13/2009 01/21/2009 Y29313 E0.072

—

—

—

—

—

— 0.163

—

01/25/2009 02/11/2009 Y07941

—

—

—

—

—

—

— 0.179

—

02/06/2009 02/11/2009 Y05951

—

—

—

—

—

—

— E0.090

—

02/18/2009 03/04/2009 Y26830 0.106

—

—

—

—

—

— E0.089

—

03/02/2009 03/04/2009 Y26409 0.568

—

—

—

—

—

— 0.579

—

03/14/2009 04/01/2009 Y07941 1.01

—

—

—

—

—

— 0.198

—

03/26/2009 04/01/2009 Y08882 0.136

—

—

—

—

—

— 0.280

—

04/07/2009 04/23/2009 Y29349

—

—

—

—

—

—

— E0.091

—

04/19/2009 04/23/2009 Y16392 0.190

—

—

—

—

—

— E0.075

—

05/01/2009 05/21/2009 Y08484 0.595

—

—

—

—

—

— 0.160

—

05/13/2009 05/21/2009 Y26663

—

—

—

—

—

—

— 0.225

—

05/25/2009 06/11/2009 Y11867 0.484

—

—

—

—

—

— 0.150

—

06/06/2009 06/11/2009 Y07941 E0.044

—

—

—

—

—

— 0.159

—

06/18/2009 07/09/2009 Y11968

—

—

—

—

—

—

— 0.284

—

06/30/2009 07/09/2009 Y07567

—

—

—

—

—

—

— 0.112

—

07/12/2009 07/29/2009 Y08490

—

—

—

—

—

—

— 0.184

—

07/24/2009 07/29/2009 Y15542 0.322

—

—

—

—

—

— 0.267

—
Appendix 183

Table B3C. Quality-control lot blank detections for medium/low-volatility volatile organic compound (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Toluene

Tetrachloroethene 

(PCE)

Ethylbenzene m- and p- Xylene Ethenyl- benzene (styrene) 1,1,2,2- Tetrachloro- ethane o-Xylene Naphthalene 1,2,3- Trichloro- benzene

[LRL] [0.08] [0.5] [0.07] [0.09] [0.09] [0.07] [0.07] [0.09] [0.05]

09/27/2008 10/16/2008 Y08939 — — — — — — — — —10/09/2008 10/16/2008 Y06313 — — — — — — — — —10/21/2008 11/06/2008 Y07941 — — — — — — — — —

11/02/2008 11/06/2008 Y25997 E0.008 — — — — — — — —11/14/2008 12/10/2008 Y26208 — — — — — — — — —11/26/2008 12/10/2008 Y26830 E0.001 — — — — — — — —

12/08/2008 12/31/2008 Y16108 E0.002 — — E0.003 — — — — —12/20/2008 12/31/2008 Y26208 E0.004 — — — — — — — —01/01/2009 01/21/2009 Y10960 E0.002 — — — — — — — —01/13/2009 01/21/2009 Y29313 — — — — — — — — —01/25/2009 02/11/2009 Y07941 — — — — — — — — —02/06/2009 02/11/2009 Y05951 — — — — — — — — —02/18/2009 03/04/2009 Y26830 — — — — — — — — —03/02/2009 03/04/2009 Y26409 E0.007 — — — — — — — —03/14/2009 04/01/2009 Y07941 E0.012 — — — — — — — —03/26/2009 04/01/2009 Y08882 E0.003 — — — — — — — —04/07/2009 04/23/2009 Y29349 — — — — — — — — —04/19/2009 04/23/2009 Y16392 E0.003 — — — — — — — —05/01/2009 05/21/2009 Y08484 E0.019 — — — — — — — —05/13/2009 05/21/2009 Y26663 — — — — — — — — —05/25/2009 06/11/2009 Y11867 E0.008 — — — — — — — —06/06/2009 06/11/2009 Y07941 — — — — — — — — —06/18/2009 07/09/2009 Y11968 — — — — — — — — —06/30/2009 07/09/2009 Y07567 — — — — — — — — —07/12/2009 07/29/2009 Y08490 E0.011 — — — — — — — —07/24/2009 07/29/2009 Y15542 E0.017 — — E0.005 — — — — —
184 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory report- ing level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide 2-Butanone (methyl ethyl ketone) Benzene Toluene Tetrachloroethene (PCE) [LRL] [0.20] [0.06] [0.19] [0.06] [0.16] [0.14] [0.11] [0.08] [0.50] 10/12/2003 10/16/2003 Y29342 E0.128

—

—

— E0.005

— E0.118 E0.009

—

10/24/2003 11/21/2003 Y29305 E0.100

—

—

—

—

— E0.100 E0.05

—

11/05/2003 11/21/2003 Y06586 E0.052

—

—

— E0.001

— 0.324 E0.003

—

11/17/2003 11/21/2003 Y26663 E0.081

—

—

— E0.003

— 0.182 E0.011

—

11/29/2003 12/18/2003 Y26371 0.470

—

—

—

—

— 0.122 E0.010

—

12/11/2003 12/18/2003 Y07941 E0.093

—

—

—

—

— E0.072 E0.002

—

12/23/2003 01/29/2004 Y10960 E0.047

—

—

—

—

— E0.063 E0.003

—

01/04/2004 01/29/2004 Y26416 E0.067

—

—

—

—

— E0.061 E0.014

—

01/14/2004 02/06/2004 Y20114 0.395

— E0.05

— E0.023

— E0.091 E0.014

—

01/28/2004 02/06/2004 Y29310 0.347

—

—

— E0.011

— E0.062 E0.005

—

02/09/2004 02/27/2004 Y10960 0.210 E0.02 E0.02

— E0.008

— 0.145 E0.011

—

02/21/2004 02/27/2004 Y06313 E0.183

— E0.01

— E0.002

— 0.270 E0.007

—

03/04/2004 03/26/2004 Y16108 E0.196

—

—

—

—

— 0.159 E0.009

—

03/16/2004 03/26/2004 Y25997 0.333

—

—

—

—

— 0.155 E0.007

—

03/28/2004 04/16/2004 Y16392 E0.172

—

—

— E0.003

— E0.101 E0.005

—

04/09/2004 04/16/2004 Y16150 0.276

—

—

—

—

— E0.122 E0.011

—

04/21/2004 05/06/2004 Y26166 E0.152

—

—

— E0.001

— 0.136 E0.008

—

05/03/2004 05/06/2004 Y11025 0.381

—

—

— E0.023 E0.087 E0.080 E0.072

—

05/15/2004 06/04/2004 Y26830 E0.161

—

—

— E0.005

— 0.135 E0.006

—

05/27/2004 06/04/2004 Y26371 0.485

—

—

— E0.004

— 0.294 E0.010

—

06/08/2004 06/28/2004 Y10925 0.386

—

—

—

—

— 0.491 E0.007

—

06/20/2004 06/28/2004 Y29357 0.261

—

—

—

—

— 0.191 E0.008

—

07/02/2004 07/21/2004 Y26371 0.342

—

—

— E0.011

— 0.379 E0.009

—

07/14/2004 07/21/2004 Y29342 E0.086

—

—

— E0.004

— E0.094 E0.004

—

07/26/2004 08/25/2004 Y26144 0.224

—

—

— E0.005

— 0.445 E0.008

—

08/19/2004 08/25/2004 Y10939 E0.144

—

—

—

—

— 0.121 E0.004

—

08/31/2004 09/21/2004 Y29313 0.425

—

—

— E0.009

— 0.177 E0.073

—

09/12/2004 09/21/2004 Y11458 0.244

—

—

—

—

— E0.080 E0.025

—

09/23/2004 10/13/2004 Y26409 0.402

—

—

—

—

— 0.272 E0.009

—

10/06/2004 10/13/2004 Y11458 E0.124

—

—

—

—

— E0.063 E0.014

—

10/18/2004 11/10/2004 Y07941 E0.159

—

—

—

—

— E0.089 E0.009

—

10/30/2004 11/10/2004 Y29380 E0.128

—

—

—

—

— 0.248 E0.007

—

11/23/2004 12/08/2004 Y16579 E0.142

—

—

—

—

— 0.176 E0.009

—

12/05/2004 12/08/2004 Y29305 E0.094

—

—

—

—

— 0.141 E0.011

—

12/28/2004 01/20/2005 Y08484 E0.112

—

—

—

—

— 0.127 E0.018

—

Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.
Appendix 185

Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Ethylbenzene m- and p- Xylene Ethenylbenzene (styrene) 1,1,2,2- Tetrachloroethane o-Xylene Isopropylbenzene Naphthalene 1,2,3,- Trichlorobenzene

[LRL] [0.07] [0.09] [0.09] [0.07] [0.07] [0.08] [0.09] [0.05]

10/12/2003 10/16/2003 Y29342 E0.002 E0.004 — — — — — —10/24/2003 11/21/2003 Y29305 — E0.001 — — — — — —

11/05/2003 11/21/2003 Y06586 — E0.001 — — — — — —11/17/2003 11/21/2003 Y26663 — — — — — — — —11/29/2003 12/18/2003 Y26371 — — — — — — — —12/11/2003 12/18/2003 Y07941 — — — — — — — —

12/23/2003 01/29/2004 Y10960 — — — — — — — —01/04/2004 01/29/2004 Y26416 — — — — — — — —01/14/2004 02/06/2004 Y20114 E0.003 E0.011 E0.005 — — — E0.004 —01/28/2004 02/06/2004 Y29310 — E0.003 E0.001 — — — E0.003 —02/09/2004 02/27/2004 Y10960 E0.002 E0.005 E0.004 — — — E0.002 —02/21/2004 02/27/2004 Y06313 — E0.003 — — — — E0.003 —03/04/2004 03/26/2004 Y16108 E0.001 E0.003 E0.002 — — — E0.001 —03/16/2004 03/26/2004 Y25997 — — — — — — E0.004 —03/28/2004 04/16/2004 Y16392 — E0.002 E0.003 — — — E0.003 —04/09/2004 04/16/2004 Y16150 — E0.004 — — — — E0.003 —04/21/2004 05/06/2004 Y26166 E0.001 E0.005 E0.004 — — — E0.007 —05/03/2004 05/06/2004 Y11025 E0.005 E0.021 E0.009 — — — E0.005 —05/15/2004 06/04/2004 Y26830 — E0.004 — — — — E0.004 —05/27/2004 06/04/2004 Y26371 — E0.003 — — — — E0.010 —06/08/2004 06/28/2004 Y10925 E0.001 E0.002 E0.001 — — — E0.005 —06/20/2004 06/28/2004 Y29357 E0.001 E0.001 E0.001 — — — E0.004 —07/02/2004 07/21/2004 Y26371 E0.001 E0.003 E0.003 — — — E0.007 —07/14/2004 07/21/2004 Y29342 E0.001 E0.001 E0.001 — — — E0.004 —07/26/2004 08/25/2004 Y26144 E0.003 E0.006 E0.001 — — — E0.004 —08/19/2004 08/25/2004 Y10939 E0.001 E0.002 — — — — E0.003 —08/31/2004 09/21/2004 Y29313 E0.003 E0.006 E0.002 — — — E0.004 —09/12/2004 09/21/2004 Y11458 — E0.006 E0.006 — — — E0.004 —09/23/2004 10/13/2004 Y26409 — E0.005 E0.002 — — — E0.005 —10/06/2004 10/13/2004 Y11458 — E0.004 E0.013 — — — E0.005 —10/18/2004 11/10/2004 Y07941 E0.002 E0.005 E0.002 — — — E0.004 —10/30/2004 11/10/2004 Y29380 E0.001 E0.002 — — — — E0.005 —

11/23/2004 12/08/2004 Y16579 — E0.003 E0.003 — — — E0.005 —

12/05/2004 12/08/2004 Y29305 E0.003 E0.005 — — — — E0.004 —12/28/2004 01/20/2005 Y08484 E0.005 E0.009 — — — — E0.008 —
186 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory report- ing level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide 2-Butanone (methyl ethyl ketone) Benzene Toluene Tetrachloroethene (PCE) [LRL] [0.20] [0.06] [0.19] [0.06] [0.16] [0.14] [0.11] [0.08] [0.50] 01/10/2005 01/20/2005 Y11867 0.295

—

—

—

—

— 0.205 E0.036

—

01/22/2005 02/10/2005 Y16307 E0.094

—

—

—

—

— 0.218 E0.018

—

02/03/2005 02/10/2005 Y10960 E0.191

—

—

—

—

— 0.115 E0.011

—

02/15/2005 03/03/2005 Y11867 0.218

—

—

—

—

— 0.319 E0.028

—

02/27/2005 03/03/2005 Y29380 E0.081

—

—

—

—

— E0.051 E0.006

—

03/11/2005 03/30/2005 Y10962 E0.084

—

—

—

—

— E0.063 E0.008

—

03/23/2005 03/30/2005 Y29305 E0.124

—

—

—

—

— 0.394 E0.013

—

04/04/2005 04/20/2005 Y15649 0.325

—

—

— E0.009

— 0.158 E0.012

—

04/16/2005 04/20/2005 Y11241 0.423

—

—

— E0.002

— 0.310 E0.013

—

04/28/2005 05/17/2005 Y26371 0.319

—

—

—

—

— 0.182 E0.011

—

05/10/2005 05/17/2005 Y15649 0.524

—

—

—

—

— 0.118 E0.015

—

06/03/2005 06/20/2005 Y29305 0.576

—

—

—

—

— 0.155 E0.012

—

06/15/2005 06/20/2005 Y10939 0.862 E0.01

—

—

—

— 0.244 E0.007

—

07/09/2005 07/28/2005 Y25997 0.632

—

—

—

—

— 0.174 E0.005

—

07/25/2005 07/28/2005 Y26663 0.939

—

—

—

—

— 0.194 E0.008

—

08/02/2005 08/17/2005 Y06224 0.451

—

—

—

—

— 0.244 E0.017

—

08/14/2005 08/17/2005 Y11241 0.387

—

—

—

—

— 0.420 E0.017

—

08/26/2005 09/14/2005 Y06313 0.384

—

—

—

—

— 0.117 E0.010

—

09/07/2005 09/14/2005 Y08490 0.272

—

—

—

—

— 0.259 E0.011

—

09/19/2005 10/05/2005 Y06586 E0.152

—

—

—

—

— E0.102 E0.012

—

10/01/2005 10/05/2005 Y11861 E0.171

—

—

—

—

— E0.092

—

—

10/13/2005 11/02/2005 Y16557 E0.073

—

—

—

—

— 0.267 E0.012

—

10/25/2005 11/02/2005 Y07567 E0.031

—

—

—

—

— E0.093 E0.011

—

11/06/2005 11/29/2005 Y11396 E0.090

—

—

—

—

— 0.174 E0.014

—

11/18/2005 11/29/2005 Y26371 0.533

—

—

—

—

— 0.780 E0.014

—

12/12/2005 01/04/2006 Y29329 0.511

—

—

—

—

— 0.224 E0.022

—

12/24/2005 01/04/2006 Y26371 0.300

—

—

—

—

— 0.392 E0.011

—

01/06/2006 01/24/2006 Y16246 E0.131

—

—

—

—

— 0.217 E0.011

—

01/17/2006 01/24/2006 Y08490 E0.084

—

—

—

—

— 0.254 E0.011

—

01/29/2006 02/15/2006 Y26663 0.212

—

—

—

—

— 0.378 E0.013

—

02/10/2006 02/15/2006 Y11093 E0.130

—

—

—

—

— E0.083 E0.012

—

02/22/2006 03/09/2006 Y10925 E0.142

—

—

—

—

— 0.167 E0.013

—

03/05/2006 03/09/2006 Y11867 E0.132

— E0.03

— E0.027

— 0.179 E0.010

—

03/30/2006 04/13/2006 Y11984 E0.171

—

—

—

—

— 0.177 E0.011

—

04/11/2006 04/13/2006 Y04390 E0.064

—

—

—

—

— 0.106 E0.014

—
Appendix 187

Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Ethylbenzene m- and p- Xylene Ethenylbenzene (styrene) 1,1,2,2- Tetrachloroethane o-Xylene Isopropylbenzene Naphthalene 1,2,3,- Trichlorobenzene

[LRL] [0.07] [0.09] [0.09] [0.07] [0.07] [0.08] [0.09] [0.05]

01/10/2005 01/20/2005 Y11867 — E0.006 — — — — E0.009 —01/22/2005 02/10/2005 Y16307 E0.005 — — — — — E0.002 —02/03/2005 02/10/2005 Y10960 E0.002 E0.006 — — — — E0.005 —02/15/2005 03/03/2005 Y11867 E0.003 E0.005 E0.002 — — — E0.006 —02/27/2005 03/03/2005 Y29380 — — — — — — E0.005 —

03/11/2005 03/30/2005 Y10962 — E0.002 — E0.001 — — E0.001 —

03/23/2005 03/30/2005 Y29305 — — — — — — E0.009 —04/04/2005 04/20/2005 Y15649 — — — — — — E0.004 —04/16/2005 04/20/2005 Y11241 — E0.005 — — — — E0.005 —04/28/2005 05/17/2005 Y26371 — — — — — — — —05/10/2005 05/17/2005 Y15649 — — — — — — — —06/03/2005 06/20/2005 Y29305 — E0.006 — — — — E0.005 —06/15/2005 06/20/2005 Y10939 — E0.003 — — — — — —07/09/2005 07/28/2005 Y25997 — — — — — — E0.004 —07/25/2005 07/28/2005 Y26663 — — — — — — — —08/02/2005 08/17/2005 Y06224 E0.003 E0.008 E0.003 — — — — —08/14/2005 08/17/2005 Y11241 E0.010 E0.011 E0.010 — — — E0.010 —08/26/2005 09/14/2005 Y06313 — — — — — — — —09/07/2005 09/14/2005 Y08490 E0.010 E0.010 — — — — — —09/19/2005 10/05/2005 Y06586 — — — — — — — —10/01/2005 10/05/2005 Y11861 — — — — — — — —10/13/2005 11/02/2005 Y16557 — — — — — — — —10/25/2005 11/02/2005 Y07567 — — — — — — — —

11/06/2005 11/29/2005 Y11396 E0.010 E0.010 E0.010 — — — E0.010 —11/18/2005 11/29/2005 Y26371 E0.010 E0.010 E0.010 — — — E0.010 —

12/12/2005 01/04/2006 Y29329 E0.010 E0.010 E0.010 — — — — —12/24/2005 01/04/2006 Y26371 — E0.010 E0.010 — — — E0.010 —01/06/2006 01/24/2006 Y16246 — — — — — — E0.010 —01/17/2006 01/24/2006 Y08490 — — — — — — — —01/29/2006 02/15/2006 Y26663 — — — — — — — —02/10/2006 02/15/2006 Y11093 — — — — — — — —02/22/2006 03/09/2006 Y10925 — — — — — — — —03/05/2006 03/09/2006 Y11867 — — — — — — — —03/30/2006 04/13/2006 Y11984 — — — — — — — —

04/11/2006 04/13/2006 Y04390 — — — — — — — —
188 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory report- ing level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide 2-Butanone (methyl ethyl ketone) Benzene Toluene Tetrachloroethene (PCE) [LRL] [0.20] [0.06] [0.19] [0.06] [0.16] [0.14] [0.11] [0.08] [0.50] 04/23/2006 05/11/2006 Y25959 E0.161

—

—

— E0.021

— E0.072 E0.012

—

05/05/2006 05/11/2006 Y26404 E0.053

—

—

—

—

— E0.084 E0.011

—

06/10/2006 07/12/2006 Y26144

—

—

—

—

—

— 0.282 E0.011

—

06/22/2006 07/12/2006 Y26403 E0.154

—

—

—

—

— E0.092

—

—

07/04/2006 07/12/2006 Y11458 NA NA NA

— NA NA NA NA NA

07/28/2006 08/14/2006 Y11407 0.640

—

—

—

—

— 0.121 E0.012

—

08/09/2006 08/14/2006 Y11458 E0.120

—

—

—

—

— E0.052 E0.014

—

08/21/2006 09/08/2006 Y11458 0.203

—

—

—

—

— E0.091 E0.014 E0.010

09/02/2006 09/08/2006 Y11458 0.203

—

—

—

—

— E0.090 E0.011 E0.010

09/14/2006 10/02/2006 Y29328 E0.183

—

—

—

—

— 0.213 E0.012

—

09/26/2006 10/02/2006 Y11458 0.240

—

—

—

—

— E0.093 E0.011 E0.010

10/08/2006 10/25/2006 Y29305 E0.198

—

—

—

—

— 0.180 E0.010

—

10/20/2006 10/25/2006 Y30114 E0.043

—

—

—

—

— 0.254 E0.008

—

11/01/2006 11/17/2006 Y26663

—

—

—

—

—

— E0.043 E0.008

—

11/13/2006 11/17/2006 Y11181 E0.042

—

—

—

—

— E0.039 E0.006

—

11/25/2006 12/15/2006 Y07567

—

—

—

—

—

— E0.052 E0.009

—

12/07/2006 12/15/2006 Y29380 0.219

—

—

—

—

— E0.076 E0.005

—

12/31/2006 01/19/2007 Y29380 E0.098

—

—

—

—

— E0.088 E0.010

—

01/12/2007 01/19/2007 Y25997 E0.090

—

—

—

—

— 0.313 E0.005

—

01/24/2007 02/07/2007 Y11968 E0.110

—

—

—

—

— 0.180 E0.012

—

02/05/2007 02/07/2007 Y08484 0.203

—

—

—

—

— E0.025 E0.014

—

02/17/2007 03/08/2007 Y29329 0.372

—

—

—

—

— E0.081 E0.007

—

03/01/2007 03/08/2007 Y11258 E0.102

—

—

—

—

—

— E0.004

—

03/13/2007 03/29/2007 Y25997 0.234

—

—

—

—

— 0.329 E0.020

—

03/25/2007 03/29/2007 Y16557 E0.099

—

—

—

—

— 0.120

—

—

04/06/2007 05/01/2007 Y11867 E0.102 

—

—

—

—

— 0.162 E0.012

—

04/18/2007 05/01/2007 Y10960

—

—

—

—

—

— 0.173

—

—

04/30/2007 05/16/2007 Y29357 E0.061

—

—

—

—

— E0.062 E0.006

—

05/12/2007 05/16/2007 Y06624 E0.050

—

—

—

—

— E0.050 E0.007

—

05/24/2007 06/14/2007 Y06581 E0.102

—

—

—

—

— 0.147 E0.006

—

06/05/2007 06/14/2007 Y26371 0.350

—

—

—

—

— 0.262 E0.002

—

06/17/2007 07/11/2007 Y16109 0.282

—

—

—

—

— 0.118 E0.010

—

06/29/2007 07/11/2007 Y16229 E0.099

—

—

—

—

— 0.108 E0.003

—

07/11/2007 7/11–13/2007 Y08484

—

—

—

—

—

— E0.086

—

—

07/23/2007 08/09/2007 Y26663 E0.151

—

—

—

—

— 0.257

—

—
Appendix 189

Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Ethylbenzene m- and p- Xylene Ethenylbenzene (styrene) 1,1,2,2- Tetrachloroethane o-Xylene Isopropylbenzene Naphthalene 1,2,3,- Trichlorobenzene

[LRL] [0.07] [0.09] [0.09] [0.07] [0.07] [0.08] [0.09] [0.05]

04/23/2006 05/11/2006 Y25959 — — — — — — — —05/05/2006 05/11/2006 Y26404 — — — — — — — —06/10/2006 07/12/2006 Y26144 — — — — — — — —06/22/2006 07/12/2006 Y26403 — — — — — — — —07/04/2006 07/12/2006 Y11458 NA NA NA NA — — NA —07/28/2006 08/14/2006 Y11407 E0.010 E0.010 — — — — E0.011 —08/09/2006 08/14/2006 Y11458 — — — — — — — —08/21/2006 09/08/2006 Y11458 — — — — — — E0.010 —09/02/2006 09/08/2006 Y11458 — — — — — — E0.010 —09/14/2006 10/02/2006 Y29328 — E0.010 — — — — E0.010 —09/26/2006 10/02/2006 Y11458 — — — — — — E0.010 —10/08/2006 10/25/2006 Y29305 — — — — — — E0.004 —10/20/2006 10/25/2006 Y30114 — E0.004 — — — — E0.004 —

11/01/2006 11/17/2006 Y26663 — — — — — — — —11/13/2006 11/17/2006 Y11181 — — — — — — — —11/25/2006 12/15/2006 Y07567 — — — — — — — —

12/07/2006 12/15/2006 Y29380 — — — — — — — —12/31/2006 01/19/2007 Y29380 — E0.005 — — — — — —01/12/2007 01/19/2007 Y25997 — E0.003 — — — — — —01/24/2007 02/07/2007 Y11968 E0.003 — — — — — — —02/05/2007 02/07/2007 Y08484 — — — — — — — —02/17/2007 03/08/2007 Y29329 — — — — — — — —03/01/2007 03/08/2007 Y11258 — E0.002 — — — — — —03/13/2007 03/29/2007 Y25997 — — E0.027 — — — — —03/25/2007 03/29/2007 Y16557 — — — — — — — —04/06/2007 05/01/2007 Y11867 — — — — — — — —04/18/2007 05/01/2007 Y10960 — — — — — — — —04/30/2007 05/16/2007 Y29357 — — — — — — — —05/12/2007 05/16/2007 Y06624 — — — — — — — —05/24/2007 06/14/2007 Y06581 — — — — — — — —06/05/2007 06/14/2007 Y26371 — — — — — — — —06/17/2007 07/11/2007 Y16109 — — — — — — — —06/29/2007 07/11/2007 Y16229 — — — — — — — —

07/11/2007 7/11–13/2007 Y08484 — — — — — — — —

07/23/2007 08/09/2007 Y26663 — — — — — — E0.003 —
190 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory report- ing level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide 2-Butanone (methyl ethyl ketone) Benzene Toluene Tetrachloroethene (PCE) [LRL] [0.20] [0.06] [0.19] [0.06] [0.16] [0.14] [0.11] [0.08] [0.50] 08/04/2007 08/09/2007 Y16109 E0.074

—

—

—

—

— 0.263 E0.005

—

08/16/2007 09/05/2007 Y11968 E0.155

—

—

—

—

— 0.121 E0.009

—

08/28/2007 09/05/2007 Y07941 0.216

—

—

—

—

— E0.087 E0.011

—

09/09/2007 10/02/2007 Y29313 E0.191

—

—

—

—

— 0.127 E0.009

—

09/21/2007 10/02/2007 Y11241 E0.054

—

—

—

—

— 0.178 E0.007

—

10/03/2007 10/19/2007 Y15542 E0.110

—

—

—

—

— 0.092 E0.009

—

10/15/2007 10/19/2007 Y06624 E0.111

—

—

—

—

— 0.285 E0.007

—

10/27/2007 11/13/2007 Y26404 E0.191

—

—

—

—

— 0.095 E0.017

—

11/08/2007 11/13/2007 Y26830 E0.072

—

—

—

—

— 0.147 E0.003

—

11/20/2007 12/06/2007 Y26830 E0.117

—

—

—

—

— 0.218 E0.003

—

12/02/2007 12/06/2007 Y26403 E0.078

—

—

—

—

— 0.178 E0.005

—

12/14/2007 01/03/2008 Y26830 E0.075

—

—

—

—

— 0.168 E0.005

—

12/26/2007 01/03/2008 Y15630 E0.064

—

—

—

—

— 0.118 E0.003

—

01/07/2008 01/23/2008 Y10925 E0.074

—

—

—

—

— 0.229 E0.009

—

01/19/2008 01/23/2008 Y08490 E0.129

—

—

—

—

— 0.177 E0.004

—

01/31/2008 02/19/2008 Y11241

—

—

—

—

—

— E0.016 E0.002

—

02/12/2008 02/19/2008 Y26830 E0.150

—

—

—

—

— 0.385 E0.007

—

02/24/2008 03/13/2008 Y11671 E0.045

—

—

—

—

— 0.176 E0.004

—

03/07/2008 03/13/2008 Y30114 E0.037

—

—

—

—

— 0.110 E0.004

—

03/19/2008 04/03/2008 Y08490 E0.144

—

—

—

—

— 0.196 E0.006

—

03/31/2008 04/03/2008 Y16207 E0.110

—

—

—

—

— 0.171 E0.001

—

04/12/2008 04/30/2008 Y06313 E0.032

—

—

—

—

— 0.253 E0.001

—

04/24/2008 04/30/2008 Y16229 E0.027

—

—

—

—

— 0.114 E0.002

—

05/06/2008 05/22/2008 Y04390 E0.177

—

—

—

—

— 0.248

—

—

05/18/2008 05/22/2008 Y29327 E0.064

—

—

—

—

— E0.064

—

—

05/30/2008 06/18/2008 Y11402 E0.163

—

—

—

—

— E0.041 E0.003

—

06/01/2008 06/18/2008 Y06313 E0.028

—

—

—

—

— 0.137

—

—

06/23/2008 07/14/2008 Y16307 E0.182

—

—

—

—

— 0.390

—

—

07/05/2008 07/14/2008 Y30114 E0.096

—

—

—

—

— 0.269

—

—

07/17/2008 08/14/2008 Y08939

—

—

—

—

—

— 0.240

—

—

07/29/2008 08/14/2008 Y26409 E0.090

—

—

—

—

— 0.411 E0.011

—

08/10/2008 08/28/2008 Y06313 0.361

—

—

—

—

— 0.143 E0.001

—

08/22/2008 08/28/2008 Y10847 0.234

—

—

—

—

— E0.052 E0.002

—

09/03/2008 09/18/2008 Y16392 0.257

—

—

—

—

— 0.180 E0.003

—

09/15/2008 09/18/2008 Y30114 0.209

—

—

—

—

— 0.168 E0.005

—
Appendix 191

Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Ethylbenzene m- and p- Xylene Ethenylbenzene (styrene) 1,1,2,2- Tetrachloroethane o-Xylene Isopropylbenzene Naphthalene 1,2,3,- Trichlorobenzene

[LRL] [0.07] [0.09] [0.09] [0.07] [0.07] [0.08] [0.09] [0.05]

08/04/2007 08/09/2007 Y16109 — — — — — — — —

08/16/2007 09/05/2007 Y11968 E0.002 E0.003 E0.007 — — — E0.002 —08/28/2007 09/05/2007 Y07941 — — — — — — — —

09/09/2007 10/02/2007 Y29313 — — — — — — — —

09/21/2007 10/02/2007 Y11241 — — — — — — — —

10/03/2007 10/19/2007 Y15542 E0.002 E0.004 — — E0.001 — E0.002 —10/15/2007 10/19/2007 Y06624 E0.001 E0.003 E0.002 — E0.001 — — —10/27/2007 11/13/2007 Y26404 E0.003 E0.008 — — E0.003 — E0.002 —

11/08/2007 11/13/2007 Y26830 — — — — — — E0.002 —

11/20/2007 12/06/2007 Y26830 — — — — — — — E0.001

12/02/2007 12/06/2007 Y26403 — — — — — — — —

12/14/2007 01/03/2008 Y26830 — — — — — — — —

12/26/2007 01/03/2008 Y15630 — — — — — — — —

01/07/2008 01/23/2008 Y10925 E0.002 E0.006 E0.002 — E0.002 — E0.001 —

01/19/2008 01/23/2008 Y08490 — — — — — — — —

01/31/2008 02/19/2008 Y11241 E0.004 E0.007 — — E0.002 — E0.003 —

02/12/2008 02/19/2008 Y26830 E0.002 E0.005 — — E0.002 — — —02/24/2008 03/13/2008 Y11671 — — — — — — — —

03/07/2008 03/13/2008 Y30114 — — — — — — — —

03/19/2008 04/03/2008 Y08490 — — — — — — E0.002 —

03/31/2008 04/03/2008 Y16207 — — — — — — — —

04/12/2008 04/30/2008 Y06313 — — — — — — — —04/24/2008 04/30/2008 Y16229 — — — — — — — —05/06/2008 05/22/2008 Y04390 — — — — — — — —05/18/2008 05/22/2008 Y29327 — — — — — — — —05/30/2008 06/18/2008 Y11402 — — — — — — — —06/01/2008 06/18/2008 Y06313 — — — — — — — —06/23/2008 07/14/2008 Y16307 — — — — — — — —07/05/2008 07/14/2008 Y30114 — — — — — — — —07/17/2008 08/14/2008 Y08939 — — — — — — — —07/29/2008 08/14/2008 Y26409 — — — — — — E0.008 —08/10/2008 08/28/2008 Y06313 — — E0.003 — — — — —08/22/2008 08/28/2008 Y10847 — — — — — — — —

09/03/2008 09/18/2008 Y16392 — — — — — — — —09/15/2008 09/18/2008 Y30114 — — — — — — — —
192 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory report- ing level; LRL, laboratory reporting level] Sample date (mm/dd/yyyy) Analysis date (mm/dd/yyyy) Cartridge number Acetone 1,1- Dichloroethene 2- Propenenitrile (acrylonitrile) Methylene chloride Carbon disulfide 2-Butanone (methyl ethyl ketone) Benzene Toluene Tetrachloroethene (PCE) [LRL] [0.20] [0.06] [0.19] [0.06] [0.16] [0.14] [0.11] [0.08] [0.50] 09/27/2008 10/16/2008 Y29323 0.330

—

—

—

—

— 0.127

—

—

10/09/2008 10/16/2008 Y06581 E0.083

—

—

—

—

— 0.119 E0.003

—

10/21/2008 11/06/2008 Y26403 E0.092

—

—

—

—

— 0.196

—

—

11/02/2008 11/06/2008 Y16392 E0.057

—

—

—

—

— E0.091 E0.002

—

11/14/2008 12/10/2008 Y11861

—

—

—

—

—

— E0.050 E0.001

—

11/26/2008 12/10/2008 Y11093 E0.138

—

—

—

—

— E0.095 E0.028

—

12/08/2008 12/31/2008 Y29313 E0.072

—

—

—

—

— 0.197 E0.008

—

12/20/2008 12/31/2008 Y16207 E0.009

—

—

—

—

— E0.100 E0.003

—

01/01/2009 01/21/2009 Y29327 0.303

—

— 0.10

—

— 0.315 E0.003

—

01/13/2009 01/21/2009 Y26208 E0.074

—

—

—

—

— 1.789 E0.003

—

01/25/2009 02/11/2009 Y11968

—

—

—

—

—

— E0.091 E0.004

—

02/06/2009 02/11/2009 Y16246

—

—

—

—

—

— 0.118

—

—

02/18/2009 03/04/2009 Y26404 0.231

—

—

—

—

— 0.218 E0.009

—

03/02/2009 03/04/2009 Y25959 0.224

—

—

—

—

— E0.064 E0.003

—

03/14/2009 04/01/2009 Y08484

—

—

—

—

—

— 0.157

—

—

03/26/2009 04/01/2009 Y11968 E0.048

—

—

—

—

— 0.142 E0.003

—

04/07/2009 04/23/2009 Y29327 0.217

—

—

—

—

— 0.282 E0.006

—

04/19/2009 04/23/2009 Y26663 E0.099

—

—

—

—

— 0.295 E0.018

—

05/01/2009 05/21/2009 Y11671 E0.146

—

—

—

—

— 0.371 E0.010

—

05/13/2009 05/21/2009 Y26404 E0.061

—

— E0.019

—

— 0.145

—

—

05/25/2009 06/11/2009 Y29380 E0.097

—

—

—

—

— E0.104 E0.006

—

06/06/2009 06/11/2009 Y08490 E0.175

—

—

—

—

— 0.154 E0.007

—

06/18/2009 07/09/2009 Y16109 E0.073

—

— E0.033

—

— 0.254 E0.010

—

06/30/2009 07/09/2009 Y30114 E0.113

—

— E0.022

—

— 0.172 E0.009

—

07/12/2009 07/29/2009 Y16207

—

—

—

—

—

— 0.195 E0.015

—

07/24/2009 07/29/2009 Y11968 E0.073

—

—

—

—

— 0.244 E0.013

—
Appendix 193

Table B3D. Quality-control laboratory blank detections for medium/low-volatility volatile organic compounds (VOCs) processed at the Oregon Graduate Institute for air samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in part per billion by volume (ppbv). Pairs of samples analyzed on the same date had been frozen and stored at laboratory before analysis. Abbreviations: E, estimated or having a higher degree of uncertainty; mm/dd/yyyy, month/day/year; NA, not analyzed; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Sample 

date 

(mm/dd/yyyy)

Analysis 

date 

(mm/dd/yyyy)

Cartridge 

number

Ethylbenzene m- and p- Xylene Ethenylbenzene (styrene) 1,1,2,2- Tetrachloroethane o-Xylene Isopropylbenzene Naphthalene 1,2,3,- Trichlorobenzene

[LRL] [0.07] [0.09] [0.09] [0.07] [0.07] [0.08] [0.09] [0.05]

09/27/2008 10/16/2008 Y29323 — — — — — — — —10/09/2008 10/16/2008 Y06581 — E0.002 — — — — — —10/21/2008 11/06/2008 Y26403 — — — — — — — —

11/02/2008 11/06/2008 Y16392 — — — — — — — —11/14/2008 12/10/2008 Y11861 — — — — — — — —11/26/2008 12/10/2008 Y11093 E0.003 E0.009 — — — — — —

12/08/2008 12/31/2008 Y29313 — E0.003 — — — — — —12/20/2008 12/31/2008 Y16207 — — — — — — — —01/01/2009 01/21/2009 Y29327 — — — — — — — —01/13/2009 01/21/2009 Y26208 — — — — — — — —01/25/2009 02/11/2009 Y11968 — — — — — — — —02/06/2009 02/11/2009 Y16246 — — — — — — — —02/18/2009 03/04/2009 Y26404 — — — — — — E0.005 —03/02/2009 03/04/2009 Y25959 — — — — — — — —03/14/2009 04/01/2009 Y08484 — — — — — E0.001 — —03/26/2009 04/01/2009 Y11968 — — — — — — — —04/07/2009 04/23/2009 Y29327 — — — — — — E0.003 —04/19/2009 04/23/2009 Y26663 — — — — — — E0.004 —05/01/2009 05/21/2009 Y11671 — — — — — — E0.001 —05/13/2009 05/21/2009 Y26404 — — — — — — E0.001 —05/25/2009 06/11/2009 Y29380 — — — — — — — —06/06/2009 06/11/2009 Y08490 — — — — — — — —06/18/2009 07/09/2009 Y16109 — — — — — — — —06/30/2009 07/09/2009 Y30114 — — — — — — — —07/12/2009 07/29/2009 Y16207 — — — — — — — —07/24/2009 07/29/2009 Y11968 — — — — — — — —
194 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Table B4A. National Water Quality Laboratory quality-control reagent-spike results for polycyclic aromatic hydrocarbon (PAH) 

compound recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.

[Alkylated PAH were not spiked, so they are not listed in this table. Values are given in percentage recovery, unless noted. Abbreviations: GCMS, gas 

chromatography mass spectrometry; GFF, glass fiber filter; mm/dd/yyyy, month/day/year; NA, not analyzed; PSE, pressurized solvent extraction; PUF, 

polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only 

assuming 315 cubic meters air volume); μg/m3; micrograms per cubic meter]

Begin 

date

(mm/dd/yyyy)

Sample 

component 

spiked

Sample 

preparation 

set number

Extraction 

by

Extract 

split

GCMS 

SIM or 

scan

TSP 

(μg/m3) Anthracene Benz[a] anthracene

Benzo[ghi] 

perylene

Benzo[a] 

pyrene

Benzo[b] 

fluoranthene

Benzo[e] 

pyrene

11/19/2003 GFF 03.32308 PSE Yes SIM 3.2 68.7 67.5 84.7 68.7 88.8 97.0

11/19/2003 PUF 03.32308 PSE Yes SIM 85.0 85.3 91.3 85.2 91.2 95.7

03/12/2004 GFF 04.07205 PSE Yes Scan 1.3 69.7 69.3 64.7 60.5 65.8 64.7

03/12/2004 PUF 04.07205 PSE Yes Scan 72.8 78.0 70.8 64.5 69.3 70.8

08/30/2004 GFF 04.24305 PSE Yes Scan 0.0 62.9 81.1 82.6 74.9 81.9 NA

08/30/2004 PUF 04.24305 PSE Yes Scan 77.3 85.3 98.3 87.1 103 NA

09/14/2005 GFF 05.25707 Soxhlet No Scan 6.3 73.6 90.3 116 92.9 118 120

09/14/2005 PUF 05.25707 Soxhlet No Scan 77.6 93.2 113 93.8 115 117

01/17/2006 GFF 06.01705 Soxhlet No Scan 3.2 84.2 97.8 118 86.6 109 106

01/17/2006 PUF 06.01705 Soxhlet No Scan 55.0 83.4 109 52.4 89.2 97.9

08/15/2006 GFF 06.22308 Soxhlet No Scan 2.5 76.7 76.7 72.3 71.7 71.9 73.2

08/15/2006 PUF 06.22308 Soxhlet No Scan 66.6 73.9 79.5 66.5 76.9 80.2

04/18/2008 GFF 08.10910 Soxhlet No Scan 3.8 48.5 51.6 51.3 50.5 53.9 54.4

04/18/2008 PUF 08.10910 Soxhlet No Scan 86.0 90.0 89.1 86.9 98.7 97.8

Table B4A. National Water Quality Laboratory quality-control reagent-spike results for polycyclic aromatic hydrocarbon (PAH) 

compound recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[Alkylated PAH were not spiked, so they are not listed in this table. Values are given in percentage recovery, unless noted. Abbreviations: GCMS, gas 

chromatography mass spectrometry; GFF, glass fiber filter; mm/dd/yyyy, month/day/year; NA, not analyzed; PSE, pressurized solvent extraction; PUF, 

polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only 

assuming 315 cubic meters air volume); μg/m3; micrograms per cubic meter]

Begin 

date

(mm/dd/yyyy)

Sample 

component 

spiked

Sample 

preparation 

set number

Extraction 

by

Extract 

split

GCMS 

SIM or 

scan

TSP 

(μg/m3) 

Benzo[k] 

fluoranthene Chrysene Coronene Dibenzo[a,h] anthracene Fluoranthene

11/19/2003 GFF 03.32308 PSE Yes SIM 3.2 91.5 81.7 86.0 73.8 78.2

11/19/2003 PUF 03.32308 PSE Yes SIM 101 92.0 87.2 86.7 96.8

03/12/2004 GFF 04.07205 PSE Yes Scan 1.3 70.2 72.2 60.5 61.8 72.8

03/12/2004 PUF 04.07205 PSE Yes Scan 73.7 80.5 66.8 65.7 79.8

08/30/2004 GFF 04.24305 PSE Yes Scan 0.0 82.6 84.1 NA 88.7 85.5

08/30/2004 PUF 04.24305 PSE Yes Scan 98.2 84.8 NA 104 92.1

09/14/2005 GFF 05.25707 Soxhlet No Scan 6.3 114 98.0 124 120 92.9

09/14/2005 PUF 05.25707 Soxhlet No Scan 114 93.0 117 112 99.1

01/17/2006 GFF 06.01705 Soxhlet No Scan 3.2 102 91.8 126 112 104

01/17/2006 PUF 06.01705 Soxhlet No Scan 86.7 113 122 101 103

08/15/2006 GFF 06.22308 Soxhlet No Scan 2.5 73.1 75.9 NA 74.9 79.2

08/15/2006 PUF 06.22308 Soxhlet No Scan 77.1 77.6 NA 81.8 77.6

04/18/2008 GFF 08.10910 Soxhlet No Scan 3.8 54.1 56.0 39.3 52.7 51.2

04/18/2008 PUF 08.10910 Soxhlet No Scan 93.9 92.3 66.4 92.8 92.0
Appendix 195

Table B4A. National Water Quality Laboratory quality-control reagent-spike results for polycyclic aromatic hydrocarbon (PAH) 

compound recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[Alkylated PAH were not spiked, so they are not listed in this table. Values are given in percentage recovery, unless noted. Abbreviations: GCMS, gas 

chromatography mass spectrometry; GFF, glass fiber filter; mm/dd/yyyy, month/day/year; NA, not analyzed; PSE, pressurized solvent extraction; PUF, 

polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only 

assuming 315 cubic meters air volume); μg/m3; micrograms per cubic meter]

Begin 

date

(mm/dd/yyyy)

Sample 

component 

spiked

Sample 

preparation 

set number

Extraction 

by

Extract 

split

GCMS 

SIM or 

scan

TSP 

(μg/m3) 

Indeno[1,2,3-cd] 

pyrene

2-Methylanthracene

4,5-

Methylenephenanthrene

1-

Methylphenanthrene1-Methylpyrene

11/19/2003 GFF 03.32308 PSE Yes SIM 3.2 62.3 65.3 76.8 80.8 76.8

11/19/2003 PUF 03.32308 PSE Yes SIM 80.2 85.0 92.3 91.8 96.3

03/12/2004 GFF 04.07205 PSE Yes Scan 1.3 59.2 66.7 71.5 70.8 69.5

03/12/2004 PUF 04.07205 PSE Yes Scan 68.3 72.3 77.7 75.3 78.2

08/30/2004 GFF 04.24305 PSE Yes Scan 0.0 85.3 66.2 71.9 76.8 81.1

08/30/2004 PUF 04.24305 PSE Yes Scan 98.7 81.8 79.3 84.0 88.8

09/14/2005 GFF 05.25707 Soxhlet No Scan 6.3 106 75.9 83.9 91.1 92.9

09/14/2005 PUF 05.25707 Soxhlet No Scan 104 81.5 85.0 95.2 99.5

01/17/2006 GFF 06.01705 Soxhlet No Scan 3.2 109 82.5 99.1 106 103

01/17/2006 PUF 06.01705 Soxhlet No Scan 89.3 56.4 103 110 92.9

08/15/2006 GFF 06.22308 Soxhlet No Scan 2.5 70.7 77.1 78.3 74.8 76.3

08/15/2006 PUF 06.22308 Soxhlet No Scan 70.9 68.1 76.6 77.0 76.9

04/18/2008 GFF 08.10910 Soxhlet No Scan 3.8 50.7 49.1 48.7 50.6 51.1

04/18/2008 PUF 08.10910 Soxhlet No Scan 87.5 85.1 89.7 92.2 91.9

Table B4A. National Water Quality Laboratory quality-control reagent-spike results for polycyclic aromatic hydrocarbon (PAH) 

compound recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued

[Alkylated PAH were not spiked, so they are not listed in this table. Values are given in percentage recovery, unless noted. Abbreviations: GCMS, gas 

chromatography mass spectrometry; GFF, glass fiber filter; mm/dd/yyyy, month/day/year; NA, not analyzed; PSE, pressurized solvent extraction; PUF, 

polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only 

assuming 315 cubic meters air volume); μg/m3; micrograms per cubic meter]

Begin 

date

(mm/dd/yyyy)

Sample 

component 

spiked

Sample 

preparation 

set number

Extraction 

by

Extract 

split

GCMS 

SIM or 

scan

TSP 

(μg/m3) Perylene Phenanthrene Pyrene

2-Fluorobiphenyl 

surrogate

Nitrobenzene-d5 

surrogate

Terphenyld14 

surrogate

11/19/2003 GFF 03.32308 PSE Yes SIM 3.2 78.5 79.0 79.3 73.8 99.8 86.2

11/19/2003 PUF 03.32308 PSE Yes SIM 84.7 93.3 96.8 97.8 108 99.6

03/12/2004 GFF 04.07205 PSE Yes Scan 1.3 59.7 73.7 71.7 62.4 45.6 66.2

03/12/2004 PUF 04.07205 PSE Yes Scan 64.0 80.3 79.7 66.0 49.2 73.4

08/30/2004 GFF 04.24305 PSE Yes Scan 0.0 NA 72.4 81.3 42.5 44.1 96.4

08/30/2004 PUF 04.24305 PSE Yes Scan NA 83.8 91.5 84.0 78.9 102

09/14/2005 GFF 05.25707 Soxhlet No Scan 6.3 86.8 85.7 93.3 74.2 69.8 95.0

09/14/2005 PUF 05.25707 Soxhlet No Scan 90.5 89.7 98.7 74.7 68.9 99.8

01/17/2006 GFF 06.01705 Soxhlet No Scan 3.2 75.9 102 103 65.4 33.8 106

01/17/2006 PUF 06.01705 Soxhlet No Scan 61.3 105 104 105 85.6 122

08/15/2006 GFF 06.22308 Soxhlet No Scan 2.5 72.5 76.3 79.1 58.6 39.5 81.5

08/15/2006 PUF 06.22308 Soxhlet No Scan 67.2 76.5 76.7 79.6 61.7 79.5

04/18/2008 GFF 08.10910 Soxhlet No Scan 3.8 51.9 49.6 51.1 54.5 53.7 68.3

04/18/2008 PUF 08.10910 Soxhlet No Scan 87.0 92.0 92.1 78.8 69.0 89.7
196 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B4B. Quality-control results for polycyclic aromatic hydrocarbon (PAH) compounds detected in National Water Quality laboratory and field reagent-blanks. National Water Quality Laboratory solvent-blank samples for the Sweetwater Reservoir atmospheric site, San Diego County, California. [The site-identification number for field blanks is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; μg/m3; micrograms per cubic meter; GCMS, gas chromatography mass spectrometry; GFF, glass fiber filter; Lab, Laboratory; mm/dd/yyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only, assuming 315 cubic meters air volume); LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Begin date (mm/dd/yyyy) Sample type Sample component used Sample preparation set number Extraction by Extract split GCMS SIM or scan TSP (μg/m3) Anthracene Benzo[a] anthracene Benzo[

g,h,i] 

perylene

Benzo[e] 

pyrene Chrysene Fluoranthene

[LRL] [0.5] [0.5] [0.5] [0.5] [0.5] [0.5]

11/19/2003 Lab blank 1 GFF 03.32308 PSE Yes SIM 3.8

—

—

—

—

—

—

11/19/2003 Lab blank 1 new PUF 03.32308 PSE Yes SIM

—

—

—

—

—

—

03/12/2004 Lab blank 1 GFF 04.07205 PSE Yes Scan 1.9

— E0.05 E0.03 E0.03 E0.02 E0.04

03/12/2004 Lab blank 2 new PUF 04.07205 PSE Yes Scan

—

— E0.03 E0.01

—

—

08/30/2004 Lab blank 1 GFF 04.24305 PSE Yes Scan 0.0

—

—

—

—

—

—

08/30/2004 Lab blank 2 new PUF 04.24305 PSE Yes Scan

—

—

—

—

—

—

09/14/2005 Lab blank 1 GFF 05.25707 Soxhlet No Scan 4.4

—

—

—

—

—

—

09/14/2005 Lab blank 2 PUF 05.25707 Soxhlet No Scan

—

—

—

—

—

—

09/14/2005 Lab blank 2 PUF 05.25707 Soxhlet No Scan

—

—

—

—

—

—

09/14/2005 Lab blank Solvent only 05.25707 Soxhlet No Scan

—

—

—

—

—

—

10/05/2004 Field blank GFF 05.25707 PSE Yes Scan 4.4

—

—

—

—

—

—

10/05/2004 Field blank Top and 

Bottom PUF

05.25707 PSE Yes Scan

—

—

—

—

—

—

01/17/2006 Lab blank 1 GFF 06.01705 Soxhlet No Scan 0.0

—

—

—

—

—

—

01/17/2006 Lab blank PUF 06.01705 Soxhlet No Scan

—

—

—

—

—

—

08/15/2006 Lab blank 1 GFF 06.22308 Soxhlet No Scan 3.2 E0.21

—

—

—

— E0.20

08/15/2006 Lab blank PUF 06.22308 Soxhlet No Scan

—

—

—

—

—

—

04/18/2008 Lab blank GFF 08.10910 Soxhlet No Scan 1.9

—

—

—

—

—

—

04/18/2008 Lab blank 2 new PUF 08.10910 Soxhlet No Scan

—

—

—

—

—

—

04/18/2008 Lab blank 2 new PUF 08.10910 Soxhlet No Scan

—

—

—

—

— E0.09
Appendix 197

Table B4B. Quality-control results for polycyclic aromatic hydrocarbon (PAH) compounds detected in National Water Quality laboratory and field reagent-blanks. National Water Quality Laboratory solvent-blank samples for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number for field blanks is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; μg/m3; micrograms per cubic meter; GCMS, gas chromatography mass spectrometry; GFF, glass fiber filter; Lab, Laboratory; mm/dd/yyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only, assuming 315 cubic meters air volume); LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Begin date

(mm/dd/yyyy)

Sample 

type

Sample 

component 

used

Sample 

preparation 

set number

Extraction 

by

Extract 

split

GCMS 

SIM or 

scan

TSP 

(μg/m3) 

2-Methylanthracene 4,5-Methylene- phenanthrene 1-Methyl- phenanthrene 1-Methyl- pyrene Perylene

[LRL] [0.5] [0.5] [0.5] [0.5] [0.5]

11/19/2003 Lab blank 1 GFF 03.32308 PSE Yes SIM 3.8 — — — — —11/19/2003 Lab blank 1 new PUF 03.32308 PSE Yes SIM — — — — —

03/12/2004 Lab blank 1 GFF 04.07205 PSE Yes Scan 1.9 — — — E0.04 —03/12/2004 Lab blank 2 new PUF 04.07205 PSE Yes Scan — — — — E0.0108/30/2004 Lab blank 1 GFF 04.24305 PSE Yes Scan 0.0 — — — — —08/30/2004 Lab blank 2 new PUF 04.24305 PSE Yes Scan — — — — —09/14/2005 Lab blank 1 GFF 05.25707 Soxhlet No Scan 4.4 — — — — —09/14/2005 Lab blank 2 PUF 05.25707 Soxhlet No Scan — — — — —09/14/2005 Lab blank 2 PUF 05.25707 Soxhlet No Scan — — — — —09/14/2005 Lab blank Solvent only 05.25707 Soxhlet No Scan — — — — —10/05/2004 Field blank GFF 05.25707 PSE Yes Scan 4.4 — — — — —10/05/2004 Field blank Top and 

Bottom PUF

05.25707 PSE Yes Scan — — — — —

01/17/2006 Lab blank 1 GFF 06.01705 Soxhlet No Scan 0.0 — — — — —01/17/2006 Lab blank PUF 06.01705 Soxhlet No Scan — — — — —08/15/2006 Lab blank 1 GFF 06.22308 Soxhlet No Scan 3.2 E0.30 E0.08 E0.08 E0.26 —08/15/2006 Lab blank PUF 06.22308 Soxhlet No Scan — — — — —04/18/2008 Lab blank GFF 08.10910 Soxhlet No Scan 1.9 — — — — —04/18/2008 Lab blank 2 new PUF 08.10910 Soxhlet No Scan — — — — —04/18/2008 Lab blank 2 new PUF 08.10910 Soxhlet No Scan — — — — —
198 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B4B. Quality-control results for polycyclic aromatic hydrocarbon (PAH) compounds detected in National Water Quality laboratory and field reagent-blanks. National Water Quality Laboratory solvent-blank samples for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number for field blanks is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Abbreviations: E, estimated or having a higher degree of uncertainty; μg/m3; micrograms per cubic meter; GCMS, gas chromatography mass spectrometry; GFF, glass fiber filter; Lab, Laboratory; mm/dd/yyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam; Scan, full scan ion monitoring mode; SIM, selected ion monitoring mode; TSP, total suspended particles (calculated for GFF samples only, assuming 315 cubic meters air volume); LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Begin date (mm/dd/yyyy) Sample type Sample component used Sample preparation set number Extraction by Extract split GCMS SIM or scan TSP (μg/m3) Phenan- threne Pyrene 2-Fluoro- biphenyl, surrogate (percent) Nitro- benzened5, surrogate (percent) Terphenyld14, surrogate (percent) [LRL] [0.5] [0.5] 11/19/2003 Lab blank 1 GFF 03.32308 PSE Yes SIM 3.8

—

— 29.4 24.2 83.8

11/19/2003 Lab blank 1 new PUF 03.32308 PSE Yes SIM

—

— 94.6 95.8 103

03/12/2004 Lab blank 1 GFF 04.07205 PSE Yes Scan 1.9 E0.05 E0.04 55.0 41.6 62.803/12/2004 Lab blank 2 new PUF 04.07205 PSE Yes Scan E0.05

— 65.6 40.4 70.6

08/30/2004 Lab blank 1 GFF 04.24305 PSE Yes Scan 0.0

—

— 54.2 52.0 98.1

08/30/2004 Lab blank 2 new PUF 04.24305 PSE Yes Scan E0.17

— 87.2 78.1 114

09/14/2005 Lab blank 1 GFF 05.25707 Soxhlet No Scan 4.4

—

— 85.8 56.0 111

09/14/2005 Lab blank 2 PUF 05.25707 Soxhlet No Scan

—

— 79.2 56.4 103

09/14/2005 Lab blank 2 PUF 05.25707 Soxhlet No Scan

—

— 59.2 43.6 102

09/14/2005 Lab blank Solvent only 05.25707 Soxhlet No Scan

—

— 85.8 56.0 111

10/05/2004 Field blank GFF 05.25707 PSE Yes Scan 4.4

—

— 33.2 26.9 79.9

10/05/2004 Field blank Top and 

Bottom PUF

05.25707 PSE Yes Scan

—

— 81.1 60.9 99.9

01/17/2006 Lab blank 1 GFF 06.01705 Soxhlet No Scan 0.0

—

— 29.6 15.7 96.0

01/17/2006 Lab blank PUF 06.01705 Soxhlet No Scan E0.25

— 104 78.5 124

08/15/2006 Lab blank 1 GFF 06.22308 Soxhlet No Scan 3.2 E0.06 E0.16 63.3 44.4 80.208/15/2006 Lab blank PUF 06.22308 Soxhlet No Scan E0.07

— 45.3 32.5 54.8

04/18/2008 Lab blank GFF 08.10910 Soxhlet No Scan 1.9

—

— 66.9 61.4 78.8

04/18/2008 Lab blank 2 new PUF 08.10910 Soxhlet No Scan E0.05

— 76.3 59.2 93.9

04/18/2008 Lab blank 2 new PUF 08.10910 Soxhlet No Scan E0.17 E0.05 84.0 74.5 93.9
Appendix 199

Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.[Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, accelerated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius]

Sample date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

preparation 

set number

Extraction 

method

Extraction 

by

Extraction 

temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

Acetochlor Alachlor Atrazine Benfluralin, estimated Carbaryl, estimated 2-Chloro-2,6- diethylacetanilide

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 104 98.1 110 89.3 0.0 11011/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 115 115 109 95.1 73.9 128

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 77.7 71.9 77.8 72.8 9.4 80.703/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 77.8 77.2 85.3 74.8 62.7 81.409/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 60.2 64.4 68.7 49.1 13.9 62.109/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 107 106 97.0 62.7 123 105

Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, accelerated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius]

Sample date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

preparation 

set number

Extraction 

method

Extraction 

by

Extraction 

temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

2-Chloro-4-

isopropylamino-6-

amino-s-triazine 

(CIAT)

Chlorpyrifos Dacthal (DCPA) Desulfinyl- fipronil Diazinon Dieldrin Dimethoate

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 74 99.8 113 107 96.1 98.4 94.211/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 101 104 104 101 101 119 78.9

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 81.4 71.1 78.4 70.3 71.4 85.4 76.603/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 85.6 81.8 81.0 74.3 80.2 88.4 67.809/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 60.9 24.7 84.6 60.1 63.0 86.2 36.209/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 103 103 93.1 104 101 91.5 107
200 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, acceler- ated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius] Sample date (mm/dd/yyyy) Quality- control sample type Sample preparation set number Extraction method Extraction by Extraction temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

Ethion

2-Ethyl-6 

methylaniline Fenamiphos, estimated Fenamiphos sulfone, estimated Fenamiphos sulfoxide, estimated Fipronil, estimated Fipronil sulfide

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 73.6 13.9 59.0 46.6 76.8 41.6 98.911/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 144 69.0 211 86.8 82.3 112 103

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 63.6 67.2 83.4 46.2 64.7 25.5 69.703/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 80.2 80.6 93.1 80.4 25.8 76.6 72.909/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 56.2 23.3 0.0 20.1 89.6 27.0 60.509/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 127 68.3 103 146 184 112 119

Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, accelerated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius]

Sample date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

preparation 

set number

Extraction 

method

Extraction 

by

Extraction 

temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

Fipronil 

sulfone Fonofos Hexazinone, estimated Isofenphos Metalaxyl Methidathion

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 52.6 92.3 78.8 99.0 116 7311/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 72.0 97.2 67.2 125 121 133

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 63.8 72.4 79.0 77.4 85.5 64.803/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 83.9 79.2 38.9 82.7 84.9 80.209/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 43.6 56.2 85.0 57.4 66.7 42.809/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 96.8 89.2 153 110 105 92.7
Appendix 201

Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, accelerated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius]

Sample date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

preparation 

set number

Extraction 

method

Extraction 

by

Extraction 

temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

Metolachlor Metribuzin Myclobutanil Parathion- methyl Pendi- methilan cis- Permethrin

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 107 41.0 78.6 87.7 91.4 95.811/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 97.7 99.9 128 81.5 88.2 102

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 74.3 67.4 79.3 70.7 76.0 72.403/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 80.7 73.3 87.5 67.7 78.8 96.909/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 82.3 39.2 55.9 49.5 77.3 72.409/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 122 89.3 119 87.9 110 160

Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, accelerated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius]

Sample date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

preparation 

set number

Extraction 

method

Extraction 

by

Extraction 

temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

transPermethrin Phorate, estimated Phorate oxon, estimated Prometon Prometryn Propyzamide

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 70.3 75.7 55.4 81.9 84.0 66.411/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 85.3 100 152 118 109 98.3

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 58.1 71.4 102 85.2 78.0 74.303/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 86.4 77.3 113 100 78.2 81.509/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 37.4 0.0 38.2 59.2 50.8 63.609/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 75.0 57.3 152 104 93.7 105
202 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B5A. National Water Quality Laboratory quality-control reagent-spike recoveries for pesticides in air for samples collected from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [Value for compounds are in percentage recovery. Estimated value has a higher degree of uncertainty because compound has poor recovery on the basis of laboratory set spikes. Abbreviations: ASE, acceler- ated solvent extraction; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; GFF, glass fiber filter; PUF, polyurethane foam plug; °C, degree Celsius] Sample date (mm/dd/yyyy) Quality- control sample type Sample preparation set number Extraction method Extraction by Extraction temperature 

(°C)

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

Simazine Terbufos Terbuthyl- azine Trifluralin, estimated Diazinond10 surrogate (percent)

α-HCHd6 

surrogate 

(percent)

11/19/2003 GFF Spike 03.32308 PSE ASE 200 120 Yes Carbo-prep 104 71.2 110 93.3 102 62.911/19/2003 PUF Spike 03.32308 PSE ASE 200 100 Yes Carbo-prep 103 108 109 110 99.8 92.4

03/12/2004 GFF Spike 04.07205 PSE ASE 200 120 Yes Carbo-prep 81.4 76.7 85.1 83.8 71.1 50.803/12/2004 PUF Spike 04.07205 PSE ASE 200 100 Yes Carbo-prep 84.2 86.8 88.0 89.4 83.2 79.709/30/2004 GFF Spike 04.24305 PSE ASE 200 100 Yes Carbo-prep 68.4 0.0 72.8 63.6 67.6 50.209/30/2004 PUF Spike 04.24305 PSE ASE 300 100 Yes Carbo-prep 109 65.3 96.5 83.7 107 78.2
Appendix 203

Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.[The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

component 

used

Sample 

preparation 

set number

Extraction 

method

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

100 μL 

S2001 

surrogate

number

Acetochlor Alachlor Atrazine Benfluralin Carbaryl

2-Chloro2,6-diethylacetanilide

[LRL] [0.05] [0.05] [0.05] [0.30] [0.10] [0.08]

11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — —11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — —

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — —03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — —09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — —09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — —

Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

component 

used

Sample 

preparation 

set number

Extraction 

method

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

100 μL 

S2001 

surrogate

number

2-Chloro-4-

isopropyl-amino6-amino-s-triazine 

(CIAT)

Chlorpyrifos Dacthal (DCPA) Desulfinyl- fipronil Diazinon Dieldrin Dimethoate

[LRL] [0.11] [0.06] [0.05] [0.05] [0.05] [0.11] [0.10]

11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — — —11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — — —

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — — —03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — — —09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — — —09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — — —
204 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level] Sample date (mm/dd/yyyy) Quality- control sample type Sample component used Sample preparation set number Extraction method Extract split before clean up Clean-up column used for pesticides 100 μL S2001 surrogate number Ethion 2-Ethyl-6 methylaniline Fenamiphos Fenamiphos sulfone Fenamiphos sulfoxide Fipronil Fipronil sulfide [LRL] [0.13] [0.11] [0.17] [0.06] [0.17] [0.05] [0.06] 11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

—

11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

—

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

—

03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

—

09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a

—

—

—

—

—

—

—

09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a

—

—

—

—

—

—

—

Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

component 

used

Sample 

preparation 

set number

Extraction 

method

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

100 μL 

S2001 

surrogate

number

Fipronil 

sulfone Fonofos Hexazinone Isofenphos Metalaxyl Methidathion

[LRL] [0.06] [0.06] [0.06] [0.10] [0.08] [0.11]

11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c

—

—

—

—

—

—

09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a

—

—

—

—

—

—

09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a

—

—

—

—

—

—
Appendix 205

Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

component 

used

Sample 

preparation 

set number

Extraction 

method

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

100 μL 

S2001 

surrogate

number

Metolachlor Metribuzin Myclobutanil Parathion- methyl Pendi- methilan cis- Permethrin

[LRL] [0.05] [0.10] [0.11] [0.06] [0.06] [0.11]

11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — —11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — —

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — —03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — —09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — —09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — —

Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level]

Sample 

date

(mm/dd/yyyy)

Qualitycontrol 

sample 

type

Sample 

component 

used

Sample 

preparation 

set number

Extraction 

method

Extract 

split 

before 

clean 

up

Clean-up 

column 

used for 

pesticides

100 μL 

S2001 

surrogate

number

transPermethrin Phorate Phorate oxon Prometon Prometryn Propyzamide

[LRL] [0.11] [0.13] [0.14] [0.05] [0.14] [0.06]

11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — —11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c — — — — — —

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — —03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c — — — — — —09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — —09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a — — — — — —
206 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B5B. National Water Quality Laboratory quality-control blank results for pesticide in air samples collected for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3), unless noted. Sample volume assumed 315 m3. Abbreviations: GFF, glass fiber filter; mm/dd/yyyy, month/day/year; PSE, pressurized solvent extraction; PUF, polyurethane foam plug; LRL, laboratory reporting level; μL, microliter; —, compound not detected at a concentration above laboratory reporting level] Sample date (mm/dd/yyyy) Quality- control sample type Sample component used Sample preparation set number Extraction method Extract split before clean up Clean-up column used for pesticides 100 μL S2001 surrogate number Simazine Terbufos Terbuthyl- azine Trifluralin Diazinond10, surrogate (percent)

α-HCHd6, 

surrogate 

(percent)

[LRL] [0.06] [0.08] [0.05] [0.30]

11/19/2003 GFF Blank 1 GFF 03.32308 PSE Yes Carbo-prep 3su108c

—

—

—

— 70.8 44.6

11/19/2003 PUF Blank 1 PUF 03.32308 PSE Yes Carbo-prep 3su108c

—

—

—

— 101 93.7

03/12/2004 GFF Blank 1 GFF 04.07205 PSE Yes Carbo-prep 3su108c

—

—

—

— 61.9 50.6

03/12/2004 PUF Blank 2 PUF 04.07205 PSE Yes Carbo-prep 3su108c

—

—

—

— 78.0 73.2

09/30/2004 GFF Blank 1 GFF 04.24305 PSE Yes Carbo-prep 3su109a

—

—

—

— 53.0 47.3

09/30/2004 PUF Blank 2 PUF 04.24305 PSE Yes Carbo-prep 3su109a

—

—

—

— 106 85.6
Appendix 207

Table B6A. U.S. Geological Survey Geologic Division Laboratory quality-control recovery results for metals from laboratory reagent-spike recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.[All values are reported as percentages. Abbreviations: NA, not analyzed; NIST, National Institute of Standards and Technology]

Time frame Reference type Antimony Arsenic Barium Beryllium Bismuth Cadmium Caesium Cerium Chromium Cobalt Copper

November 17, 2003, to March 16, 2004 SO-2 56.6 NA 102 115 NA 76.9 NA 105 89.4 98.7 NANovember 17, 2003, to March 16, 2004 SO-4 80.6 94.6 110 111 71.4 118 90.3 102 84.4 96.2 105November 17, 2003, to March 16, 2004 NIST 2710 91.1 103 97.9 NA NA 96.3 96.3 107 92.3 95.0 98.3March 28, 2004, to July 27, 2004 SO-2 75.5 NA 97.3 103 NA 154 NA 92.0 85.4 96.7 NAMarch 28, 2004, to July 27, 2004 SO-4 88.7 115 107 99.2 107 118 90.3 106 86.7 91.8 117March 28, 2004, to July 27, 2004 NIST 2710 93.8 101 98.8 NA NA 98.6 86.4 103 87.2 94.0 98.7August 20, 2004, to June 15, 2005 SO-2 104 NA 106 105 NA 115 NA 107 89.4 97.0 NAAugust 20, 2004, to June 15, 2005 SO-4 83.9 96.0 109 103 71.4 109 90.3 101 82.8 92.3 100August 20, 2004, to June 15, 2005 NIST 2710 99.0 103 101 NA NA 98.6 100 98.3 89.7 90.0 96.6July 9, 2005, to December 25, 2005 SO-2 66.0 NA 105 103 NA 100 NA 117 89.4 97.4 NAJuly 9, 2005, to December 25, 2005 SO-4 82.3 98.7 112 95.2 71.4 109 90.3 104 81.3 95.2 95.2July 9, 2005, to December 25, 2005 NIST 2710 96.4 107 104 NA NA 101 105 110 84.6 94.0 101January 17, 2006, to September 27, 2006 SO-2 56.6 NA 100 100 100 107 NA 104 102 94.7 NAJanuary 17, 2006, to September 27, 2006 SO-4 80.6 98.7 109 95.2 71.4 109 104 96.3 84.1 95.2 105January 17, 2006, to September 27, 2006 NIST 2710 97.1 105 100 NA NA 98.2 97.2 105 92.8 94.0 94.9March 25, 2007, to July 29, 2007 SO-2 47.5 NA 106 103 NA 112 NA 105 87.0 98.7 NAMarch 25, 2007, to July 29, 2007 SO-4 75.8 97.3 114 103 50.0 115.0 93.8 102 79.4 96.1 105March 25, 2007, to July 29, 2007 NIST 2710 92.7 102 101 NA NA 98.6 98.1 104 83.1 94.0 98.0August 9, 2007, to February 12, 2008 SO-2 66.0 NA 103 110 100 76.9 NA 109 148 100 NAAugust 9, 2007, to February 12, 2008 SO-4 77.4 97.3 109 111 71.4 118 90.3 96.3 91.4 96.1 105August 9, 2007, to February 12, 2008 NIST 2710 90.1 97.9 99.0 NA NA 96.3 100 99.1 103 93.0 98.0March 7, 2008, to August 10, 2008 SO-2 100 NA 103 100 100 108 NA 111 82.1 94.7 NAMarch 7, 2008, to August 10, 2008 SO-4 56.5 93.2 108 103 71.4 112 90.3 96.3 80.9 95.2 105March 7, 2008, to August 10, 2008 NIST 2710 94.0 101 100 NA NA 98.2 105 100 84.4 91.0 104 August 22, 2008, to February 6, 2009 SO-2 100 NA 103 115 100 108 NA 106 92.7 104 NA August 22, 2008, to February 6, 2009 SO-4 64.5 96.0 108 103 100 103 93.7 92.6 81.3 96.1 105 August 22, 2008, to February 6, 2009 NIST 2710 93.2 103 97.5 NA NA 95.0 105 96.5 85.6 94.0 103February 18, 2009, to July 24, 2009 SO-2 100 NA 109 110 100 108 NA 105 93.5 98.7 NAFebruary 18, 2009, to July 24, 2009 SO-4 46.8 103 115 103 71.4 118 93.8 96.3 82.7 95.2 105February 18, 2009, to July 24, 2009 NIST 2710 94.3 101 103 NA NA 99.5 98.1 96.5 82.6 90.0 95.9
208 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B6A. U.S. Geological Survey Geologic Division Laboratory quality-control recovery results for metals from laboratory reagent-spike recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [All values are reported as percentages. Abbreviations: NA, not analyzed; NIST, National Institute of Standards and Technology] Time frame Reference type Gallium Iron Lanthanum Lead Lithium Manganese Molybdenum Nickel Niobium Phosphorus November 17, 2003, to March 16, 2004 SO-2 104 100 109 87.5 122 97.8 NA NA NA 110 November 17, 2003, to March 16, 2004 SO-4 115 105 104 96.4 124 104 NA 95.8 130 114 November 17, 2003, to March 16, 2004 NIST 2710 103 104 97.1 99.1 NA 103 100 90.9 NA 98.1 March 28, 2004, to July 27, 2004 SO-2 102 95.5 103 96.5 122 95.9 NA NA NA 106 March 28, 2004, to July 27, 2004 SO-4 111 101 107 132 124 103 NA 89.6 135 111 March 28, 2004, to July 27, 2004 NIST 2710 101 102 91.2 94.0 NA 103 94.7 90.9 NA 96.7 August 20, 2004, to June 15, 2005 SO-2 104 96.3 108 91.0 112 95.8 NA NA NA 112 August 20, 2004, to June 15, 2005 SO-4 111 96.2 104 96.0 118 97.3 NA 88.3 130 110 August 20, 2004, to June 15, 2005 NIST 2710 100 96.7 88.2 95.8 NA 97.7 94.7 94.4 NA 94.3 July 9, 2005, to December 25, 2005 SO-2 104 99.4 118 91.5 93.3 98.6 NA NA NA 110 July 9, 2005, to December 25, 2005 SO-4 115 100 107 95.0 102 99.0 NA 92.5 113 109 July 9, 2005, to December 25, 2005 NIST 2710 104 102 100 102 NA 102 100 91.6 NA 95.3 January 17, 2006, to September 27, 2006 SO-2 100 97.1 107 88.0 120 95.7 NA NA NA 107 January 17, 2006, to September 27, 2006 SO-4 115 101 100 98.6 128 101 NA 92.9 120 111 January 17, 2006, to September 27, 2006 NIST 2710 106 102 97.1 96.9 NA 103 94.7 91.6 NA 98.1 March 25, 2007, to July 29, 2007 SO-2 104 97.4 109 89.5 126 99.0 NA NA NA 111 March 25, 2007, to July 29, 2007 SO-4 115 102 104 99.3 133 105 NA 92.9 80.0 115 March 25, 2007, to July 29, 2007 NIST 2710 103 100 94.1 94.9 NA 101 89.5 90.9 NA 96.2 August 9, 2007, to February 12, 2008 SO-2 104 101 109 88.5 117 89.9 NA NA NA 111 August 9, 2007, to February 12, 2008 SO-4 115 103 104 99.3 124 103 NA 92.5 115 111 August 9, 2007, to February 12, 2008 NIST 2710 101 102 92.7 97.5 NA 101 94.7 91.6 NA 96.2 March 7, 2008, to August 10, 2008 SO-2 106 98.0 108 90.5 100 95.3 NA NA NA 107 March 7, 2008, to August 10, 2008 SO-4 115 100 100 99.3 116 101 NA 92.5 99.0 106 March 7, 2008, to August 10, 2008 NIST 2710 101 101 92.7 103 NA 101 97.4 90.0 NA 92.9

 August 22, 2008, to February 6, 2009 SO-2 108 105 104 92.5 117 105 NA NA NA 107 August 22, 2008, to February 6, 2009 SO-4 101 100 98.1 97.1 109 100 NA 92.9 88.0 113 August 22, 2008, to February 6, 2009 NIST 2710 101 103 89.7 101 NA 102 94.7 90.9 NA 99.1February 18, 2009, to July 24, 2009 SO-2 108 101 111 91.0 131 98.3 NA NA NA 114February 18, 2009, to July 24, 2009 SO-4 115 102 104 101 126 97.7 NA 93.7 94.0 111February 18, 2009, to July 24, 2009 NIST 2710 100 98.5 91.2 95.8 NA 95.5 94.7 89.5 NA 94.3
Appendix 209

Table B6A. U.S. Geological Survey Geologic Division Laboratory quality-control recovery results for metals from laboratory reagent-spike recoveries for the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[All values are reported as percentages. Abbreviations: NA, not analyzed; NIST, National Institute of Standards and Technology]

Time frame Reference type Rubidium Scandium Silver Strontium Thallium Thorium Titanium Uranium Vanadium Yttrium Zinc

November 17, 2003, to March 16, 2004 SO-2 84.4 106 NA 101 86.2 87.2 127 71.4 96.7 115 102

November 17, 2003, to March 16, 2004 SO-4 91.3 107 NA 98.2 NA 90.5 92.4 84.0 104 90.9 102

November 17, 2003, to March 16, 2004 NIST 2710 100 111 NA 99.1 100 118 120 113 101 104 97.5

March 28, 2004, to July 27, 2004 SO-2 83.8 106 NA 94.3 103 85.9 110 71.4 95.8 107 109

March 28, 2004, to July 27, 2004 SO-4 90.0 107 NA 97.0 NA 98.2 93.2 84.0 104 90.9 103

March 28, 2004, to July 27, 2004 NIST 2710 99.2 111 NA 99.4 108 117 107 106 102 100 91.8

August 20, 2004, to June 15, 2005 SO-2 87.0 107 NA 102 84.5 108 107 74.5 93.7 113 104

August 20, 2004, to June 15, 2005 SO-4 89.8 104 NA 97.6 NA 96.4 85.6 84.0 96.7 86.4 97.8

August 20, 2004, to June 15, 2005 NIST 2710 99.2 105 108 97.0 100 110 99.3 101 94.4 100 97.9

July 9, 2005, to December 25, 2005 SO-2 85.7 108 NA 104 84.5 113 115 76.5 95.0 114 103

July 9, 2005, to December 25, 2005 SO-4 89.9 103 NA 98.8 NA 98.8 88.8 88.2 101 90.9 96.8

July 9, 2005, to December 25, 2005 NIST 2710 104 108 109 102 100 118 105 108 99.5 104 102

January 17, 2006, to September 27, 2006 SO-2 84.4 107 NA 99.1 77.6 84.6 99.0 79.6 93.8 109 99.2

January 17, 2006, to September 27, 2006 SO-4 91.3 105 NA 98.2 NA 89.3 82.9 79.8 101 90.9 101

January 17, 2006, to September 27, 2006 NIST 2710 101 111 107 98.8 100 108 101 100 99.3 100 97.7

March 25, 2007, to July 29, 2007 SO-2 85.7 109 NA 130 81.0 89.7 97.9 72.4 93.2 113 105

March 25, 2007, to July 29, 2007 SO-4 94.2 108 NA 100 NA 92.9 76.5 79.8 102 86.4 102

March 25, 2007, to July 29, 2007 NIST 2710 101 111 105 101 100 105 92.9 96.0 96.3 100 99.6

August 9, 2007, to February 12, 2008 SO-2 85.7 107 NA 102 86.2 100 113 73.5 97.0 110 104

August 9, 2007, to February 12, 2008 SO-4 92.0 105 NA 98.2 NA 95.2 81.8 88.2 102 86.4 101

August 9, 2007, to February 12, 2008 NIST 2710 99.2 108 98.3 97.9 100 111 101 103 99.0 95.7 98.1

March 7, 2008, to August 10, 2008 SO-2 85.7 104 NA 103 86.2 108 111 74.5 94.2 113 100

March 7, 2008, to August 10, 2008 SO-4 92.0 100 NA 101 NA 95.2 81.2 88.2 100 88.6 103

March 7, 2008, to August 10, 2008 NIST 2710 102 106 101 101 100 110 99.3 100 98.0 104 103

 August 22, 2008, to February 6, 2009 SO-2 85.1 115 NA 103 86.2 94.9 111 72.5 102 113 110

 August 22, 2008, to February 6, 2009 SO-4 89.9 105 NA 97.6 NA 95.2 75.9 79.8 101 88.6 102

 August 22, 2008, to February 6, 2009 NIST 2710 100 109 98.6 98.9 100 105 94.3 94.8 99.1 100 104

February 18, 2009, to July 24, 2009 SO-2 85.7 110 NA 103 86.2 103 108 72.5 98.3 115 105

February 18, 2009, to July 24, 2009 SO-4 94.2 102 NA 99.4 NA 100 81.5 79.8 102 90.9 103

February 18, 2009, to July 24, 2009 NIST 2710 97.5 104 105 96.7 115 118 96.8 104 96.5 104 95.5
210 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B6B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals from the Sweetwater Reservoir atmospheric site, San Diego County, California. [The site-identification number for field blank is 324141117001601. All values are reported as nanograms per cubic meter (ng/m3). Abbreviations: LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Time frame Lot number Type Antimony Arsenic Barium Beryllium Bismuth Cadmium Caesium Cerium Chromium Cobalt Copper [LRL] [0.004] [0.1] [0.02] [0.003] [0.006] [0.007] [0.003] [0.01] [0.05] [0.003] [0.2] November 17, 2003, to March 16, 2004 54051 Laboratory blank 0.008

— 18.2 0.004

— 0.010

— 0.21 0.96 0.08 0.2

November 17, 2003 to 

March 16, 2004

54051 Laboratory 

blank replicate

0.006

— 17.9 0.004

— 0.010

— 0.21 0.86 0.05 0.2

March 28, 2004, to 

July 27, 2004

90QSWR022 Field blank 

July 5, 2004

0.020

— 20.4 0.003

— 0.010

— 0.23 1.00 0.70 0.5

August 20, 2004, to 

June 15, 2005

54051 Laboratory 

blank

0.016

— 20.2 0.003

— 0.013 0.001 0.21 0.97 0.09 0.2

July 9, 2005, to 

December 25, 2005

54051 Laboratory 

blank

1.6

— 19.7 0.005

— 0.043

— 0.24 1.02 0.10 0.3

January 17, 2006, to 

September 27, 2006

R4BN85871 Laboratory 

blank

0.022

— 6.5 0.005

— 0.012

— 0.21 1.54 0.37 0.2

October 9, 2006, to 

March 14, 2007

R4BN85871 Laboratory 

blank

0.023

— 6.2 0.003

— 0.018

— 0.24 1.4 0.06

—

March 25, 2007, to 

July 29, 2007

R4BN85871 Laboratory 

blank

0.026

— 5.6 0.007

— 0.015

— 0.23 1.25 0.04 0.2

August 9, 2007, to 

February 12, 2008

R4BN85871 Laboratory 

blank

0.020

— 5.2 0.004

— 0.015 0.001 0.23 1.95 0.02 0.4

March 7, 2008, to 

August 10, 2008

R4BN85871 Laboratory 

blank

0.014

— 5.6 0.004

— 0.011

— 0.23 1.26 0.02 0.2

 August 22, 2008, to 

February 6, 2009

R4BN85871 Laboratory 

blank

0.025

— 5.5 0.006

— 0.012 0.001 0.24 1.18 0.02 0.2

February 18, 2009, to 

July 24, 2009

R8DN68842 Laboratory 

blank

—

— 10.2 0.005

— 0.011 0.001 0.12 0.74 0.01 0.2
Appendix 211

Table B6B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[The site-identification number for field blank is 324141117001601. All values are reported as nanograms per cubic meter (ng/m3). Abbreviations: LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Time frame Lot number Type Gallium Iron Lanthanum Lead Lithium Manganese Molybdenum Nickel Niobium Phosphorus [LRL] [0.002] [5] [0.005] [0.04] [0.03] [0.07] [0.005] [0.03] [0.01] [0.5]

November 17, 2003, to 

March 16, 2004

54051 Laboratory 

blank

0.02 17 0.12 0.11 — 0.51 7.2 0.40 0.04 1.3

November 17, 2003 to 

March 16, 2004

54051 Laboratory 

blank replicate

0.02 16 0.12 0.11 — 0.50 7.2 0.40 0.02 1.4

March 28, 2004, to 

July 27, 2004

90QSWR022 Field blank 

July 5, 2004

0.02 24 0.12 0.14 — 0.68 7.8 0.60 — 2.0

August 20, 2004, to 

June 15, 2005

54051 Laboratory 

blank

0.02 18 0.11 0.12 — 0.50 7.6 0.32 0.08 2.7

July 9, 2005, to 

December 25, 2005

54051 Laboratory 

blank

0.02 26 0.13 0.22 — — 7.5 0.50 — 2.2

January 17, 2006, to 

September 27, 2006

R4BN85871 Laboratory 

blank

0.02 20 0.12 0.12 — 0.64 7.8 0.56 — 0.6

October 9, 2006, to 

March 14, 2007

R4BN85871 Laboratory 

blank

0.02 18 0.13 0.11 — 0.60 7.7 0.43 — 1.3

March 25, 2007, to 

July 29, 2007

R4BN85871 Laboratory 

blank

0.02 22 0.12 0.12 0.11 0.60 7.6 0.44 — 2.9

August 9, 2007, to 

February 12, 2008

R4BN85871 Laboratory 

blank

0.02 19 0.13 0.36 — 1.2 8.1 0.42 0.04 3.1

March 7, 2008, to 

August 10, 2008

R4BN85871 Laboratory 

blank

0.02 30 0.13 0.12 0.12 0.64 8.3 0.50 — 2.0

 August 22, 2008, to 

February 6, 2009

R4BN85871 Laboratory 

blank

0.02 18 0.13 0.13 0.04 0.58 8.5 0.45 — 1.8

February 18, 2009, to 

July 24, 2009

R8DN68842 Laboratory 

blank

0.02 14 0.06 0.13 — 0.40 8.6 0.30 — 3.2
212 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table B6B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued [The site-identification number for field blank is 324141117001601. All values are reported as nanograms per cubic meter (ng/m3). Abbreviations: LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Time frame Lot number Type Rubidium Scandium Silver Strontium Thallium Thorium Titanium Uranium Vanadium Yttrium Zinc [LRL] [0.001] [0.004] [0.005] [0.08] [0.008] [0.01] [4] [0.002] [0.02] [0.005] [0.3] November 17, 2003, to March 16, 2004 54051 Laboratory blank 0.02

—

— 0.41

— 0.06

— 0.16 0.020 0.33 13.4

November 17, 2003 to 

March 16, 2004

54051 Laboratory 

blank replicate

0.02

—

— 0.40

— 0.06

— 0.16

— 0.33 13.2

March 28, 2004, to 

July 27, 2004

90QSWR022 Field blank 

July 5, 2004

0.02

— 0.08 0.49

— 0.07

— 0.15 0.040 0.35 14.2

August 20, 2004, to 

June 15, 2005

54051 Laboratory 

blank

0.02 0.032

— 0.46

— 0.09

— 0.15

— 0.35 14.3

July 9, 2005, to 

December 25, 2005

54051 Laboratory 

blank

0.03 0.009 0.01 0.49

— 0.08

— 0.16 0.048 0.35 14.0

January 17, 2006, to 

September 27, 2006

R4BN85871 Laboratory 

blank

0.02

— 0.01 0.41

— 0.07

— 0.14

— 0.32 3.7

October 9, 2006, to 

March 14, 2007

R4BN85871 Laboratory 

blank

0.01

—

— 0.40

— 0.04

— 0.14

— 0.32 3.5

March 25, 2007, to 

July 29, 2007

R4BN85871 Laboratory 

blank

0.02 0.051 0.01 0.40

— 0.07

— 0.14 0.042 0.33 2.8

August 9, 2007, to 

February 12, 2008

R4BN85871 Laboratory 

blank

0.01 0.004

— 0.40

— 0.07

— 0.16

— 0.33 2.4

March 7, 2008, to 

August 10, 2008

R4BN85871 Laboratory 

blank

0.01

—

— 0.39

— 0.06

— 0.15

— 0.34 3.2

 August 22, 2008, to 

February 6, 2009

R4BN85871 Laboratory 

blank

0.02

—

— 0.42

— 0.07

— 0.16

— 0.35 2.9

February 18, 2009, to 

July 24, 2009

R8DN68842 Laboratory 

blank

0.01

—

— 0.30

— 0.09

— 0.17 0.015 0.50 4.6
Appendix 213

Table B6C. U.S. Geological Survey Geologic Division Laboratory quality-control blank replicate comparison for metals from the Sweetwater Reservoir atmospheric site, San Diego County, California.[Values are given in percentage difference from laboratory blank. Abbreviations: nr, no replicate calculated; —, compound was not detected in laboratory blank or replicate sample at a concentration above laboratory reporting level]

Time frame Antimony Arsenic Barium Beryllium Bismuth Cadmium Caesium Cerium Chromium Cobalt Copper

November 17, 2003, to March 16, 2004 75.0 — 98.4 100 — 100 — 100 89.6 62.5 100

Table B6C. U.S. Geological Survey Geologic Division Laboratory quality-control blank replicate comparison for metals from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[Values are given in percentage difference from laboratory blank. Abbreviations: nr, no replicate calculated; —, compound was not detected in laboratory blank or replicate sample at a concentration above laboratory reporting level]

Time frame Gallium Iron Lanthanum Lead Lithium Manganese Molybdenum Nickel Niobium Phosphorus

November 17, 2003, to March 16, 2004 100 94.1 100 100 — 98.0 100 100 50 108

Table B6C. U.S. Geological Survey Geologic Division Laboratory quality-control blank replicate comparison for metals from the Sweetwater Reservoir atmospheric site, San Diego County, California.—Continued[Values are given in percentage difference from laboratory blank. Abbreviations: nr, no replicate calculated; —, compound was not detected in laboratory blank or replicate sample at a concentration above laboratory reporting level]

Time frame Rubidium Scandium Silver Strontium Thallium Thorium Titanium Uranium Vanadium Yttrium Zinc

November 17, 2003, to March 16, 2004 100 — — 97.6 — 100 — 100 nr 100 98.5
214 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

Appendix C Tables. 
Appendix 215

Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.[See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

Acenaphthene 

(62549)

Acenaphthylene 

(62550)

Anthracene 

(62551)

Benzo[a]

anthracene 

(62552)

Benzo[a]

pyrene 

(62553)

Benzo[b]

fluoranthene 

(62554)

Benzo[e]

pyrene 

(62555)

[LRL] [20] [20] [20] [20] [20] [20] [20]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9 — — — — — — 160

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6 — — — — — E19 —

Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

Benzo[ghi]

perylene 

(62556)

Benzo[k]

fluoranthene 

(62557)

Chrysene 

(62558)

1,2-Dimethylnaphthalene 

(62538)

1,6-Dimethylnaphthalene 

(62539)

4H-Cyclopenta[def]

phenanthrene 

(62547)

Dibenzo[a,h]

anthracene 

(62560)

[LRL] [20] [20] [20] [20] [20] [20] [20]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9 — — — — 40 — —

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6 — — E4.9 — E14 — —
216 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National 

Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated 

or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

2,6-Dimethylnaphthalene 

(62544)

2-Ethylnaphthalene 

(62545)

Fluoranthene 

(62561)

9H-Fluorene 

(62548)

Indeno[1,2,3-cd]

pyrene 

(62562)

1-Methyl-9Hfluorene 

(62540)

2-Methylanthracene 

(62546)

[LRL] [20] [20] [20] [20] [20] [20] [20]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9 260

— 20 20

—

—

—

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6 200

— E13

—

—

—

—

Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National 

Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated 

or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

1-Methylphenanthrene 

(62541)

1-Methylpyrene 

(62542)

Naphthalene 

(62563)

Perylene 

(62565)

Phenanthrene 

(62566)

Pyrene 

(62568)

2,3,6-Trimethylnaphthalene 

(62543)

[LRL] [20] [20] [20] [20] [20] [20] [20]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9

—

—

— 180

— 20

—

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6

—

—

— 85 E11 E12

—
Appendix 217

Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

C1-128 

Isomers

 (62569)

C1-178 

Isomers

 (62570)

C1-202 

Isomers

 (62571)

C1-228 

Isomers

 (62572)

C1-252 

Isomers

 (62573)

C2-128 

Isomers

 (62574)

C2-178 

Isomers

 (62575)

C2-202 

Isomers

 (62576)

[LRL] [40] [40] [40] [30] [80] [30] [30] [40]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9 E100 — — — — E320 — —

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6 E300 E100 — — — E200 — —

Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

C2-228 

Isomers

 (62577)

C2-252 

Isomers

 (62578)

C3-128 

Isomers

 (62579)

C3-178 

Isomers

 (62580)

C3-202 

Isomers

 (62581)

C3-228 

Isomers

 (62582)

C3-252 

Isomers

 (62583)

C4-128 

Isomers

 (62584)

[LRL] [20] [40] [70] [30] [30] [30] [40] [50]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9 — — — — — — — —

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6 — — — — — — — —
218 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued [See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level] Station name Date (mm/dd/yyyy) Time (hh:mm) Sample weight, in grams (62597) C4-178 Isomers (62585) C4-202 Isomers (62586) C4-228 Isomers (62587) C4-252 Isomers (62588) C5-128 Isomers (62589) C5-178 Isomers (62590) [LRL] [30] [30] [40] [40] [40] [40] Sweetwater Reservoir center of minimum pool (SWR03) 10/13/2004 11:41 8.9

—

—

—

—

—

—

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6

—

—

—

—

—

—

Table C1. Quality-control replicate results for polycyclic aromatic hydrocarbons (PAHs) in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 2506, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[See table 1 for site-identification number. Time is denoted in 24-hour scale. All values are reported as micrograms per kilogram (μg/kg), unless noted. The five-digit data parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Abbreviations: E, estimated or having a higher degree of uncertainty; hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; LRL, laboratory reporting level; —, compound was not detected at a concentration above the laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

C5-202 

Isomers

 (62591)

C5-228 

Isomers

 (62592)

C5-252 

Isomers

 (62593)

2-Fluorobiphenyl, 

surrogate, 

in percent

(62594)

Nitrobenzened5, 

surrogate, 

in percent 

(62595)

p-Terphenyld14, 

surrogate, 

in percent

(62596) [LRL] [40] [50] [50]

Sweetwater Reservoir center of 

minimum pool (SWR03)

10/13/2004 11:41 8.9

—

—

— 65.2 55.8 69.7

Loveland Reservoir near dam (LLR01) 08/11/2009 11:46 7.6

—

—

— 67.2 66.7 71.8
Appendix 219

Table C2. Quality-control replicate results for organochlorine (OCs) and polychlorinated biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 5504, from the Sweetwater Reservoir watershed, San Diego County, California.[The site-identification number is 324303116473101. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

Aldrin 

(39333)

Aroclor 1016 plus 

Aroclor 1242 

(46343)

Aroclor 

1254 

(39507)

Aroclor 

1260 

(39511)

cisChlordane 

(62802)

transChlordane 

(62803)

p,p’-DDD 

(39363)

p,p’-DDE 

(39368)

p,p’-DDT 

(39373)

[LRL] [6.6] [17] [17] [17] [3.3] [1.7] [8.3] [5.0] [3.3]

Loveland Reservoir 

near dam (LLR01)

08/11/2009 11:46 7.6 — — — — — — — — —

Table C2. Quality-control replicate results for organochlorine (OCs) and polychlorinated biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 5504, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[The site-identification number is 324303116473101. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

Dieldrin 

(39383)

α-Endosulfan 

(39389)

Endrin 

(39393)

α-HCH 

(39076)

β-HCH 

(34257)

Heptachlor 

(39413)

Heptachlor 

epoxide 

(39423)

Hexachlorobenzene 

(39701)

[LRL] [1.7] [1.7] [1.7] [5.0] [1.7] [3.3] [5.0] [9.9]

Loveland Reservoir 

near dam (LLR01)

08/11/2009 11:46 7.6 — — — — — — — —

Table C2. Quality-control replicate results for organochlorine (OCs) and polychlorinated biphenly (PCBs) compounds in surfical bed sediment, using U.S. Geological Survey National Water Quality Laboratory schedule 5504, from the Sweetwater Reservoir watershed, San Diego County, California.—Continued[The site-identification number is 324303116473101. Time is denoted in 24-hour scale. The five-digit parameter code in parentheses below each compound name is used in the U.S. Geological Survey computerized data system (National Water Information System) to uniquely identify a specific constituent or property. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; LRL, laboratory reporting level; —, compound was not detected at a concentration above laboratory reporting level]

Station name Date (mm/dd/yyyy) Time (hh:mm)

Sample weight, 

in grams 

(62597)

Lindane 

(39343)

p,p’-

Methoxychlor 

(39481)

Mirex 

(39758)

transNonachlor 

(62804)

Toxaphene 

(39403)

α-HCH-d6, 

surrogate, 

in percent

(62837)

Isodrin, 

surrogate, 

in percent

(62836)

Nonachlorobiphenyl, 

surrogate, 

in percent

(62838)

[LRL] [1.7] [12] [5.0] [3.3] [660]

Loveland Reservoir 

near dam (LLR01)

08/11/2009 11:46 7.6 — — — — — 91.5 88.6 89.4
220 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table C3A. U.S. Geological Survey Geologic Division Laboratory quality-control matrix-spike results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir watershed, San Diego County, California. [All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; NIST, National Institute of Standards and Technology; SWR, Sweetwater Reservoir] Date (mm/dd/yyyy) Aluminum Antimony Arsenic Barium Beryllium Bismuth Cadmium Calcium Cerium Cesium 10/15/2004 NIST-2709 found 83,850 7.4 NA 1,055 3.6 0.26 0.38 20,650 43.2 5.4 10/15/2004 NIST-2709 true 75,000 7.9 NA 968 NA NA 0.38 18,900 42.0 5.3 10/15/2004 Recovery, in percent 112 94 NA 109 NA NA 100 109 103 102 10/15/2004 SO-2 found 88,200 0.06 NA 1,160 2.1 NA 0.14 20,550 122 0.30 10/15/2004 SO-2 true 80,700 0.11 NA 1,000 2.0 0.033 0.13 19,600 112 0.41 10/15/2004 Recovery, in percent 109 52 NA 116 105 NA 108 105 108 73 10/15/2004 SO-4 found 63,450 0.47 NA 788 1.3 0.13 0.38 12,300 56.3 2.7 10/15/2004 SO-4 true 54,600 0.71 NA 700 1.26 0.14 0.34 11,000 54.0 2.9 10/15/2004 Recovery, in percent 116 66 NA 113 103 89 110 112 104 94 08/15/2009 NIST-2709 found 82,100 6.9 18.3 963 3.7 0.23 0.45 20,500 42.7 5.2 08/15/2009 NIST-2709 true 75,000 7.9 17.7 968 NA NA 0.38 18,900 42.0 5.3 08/15/2009 Recovery, in percent 109 87 103 99 NA NA 118 108 102 98 Table C3A. U.S. Geological Survey Geologic Division Laboratory quality-control matrix-spike results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir watershed, San Diego County, California.—Continued [All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; NIST, National Institute of Standards and Technology; SWR, Sweetwater Reservoir] Date (mm/dd/yyyy) Chromium Cobalt Copper Gallium Iron Lanthanum Lead Lithium Magnesium 10/15/2004 NIST-2709 found 133 13.8 37.0 16.8 37,850 24.4 17.7 52.3 16,450 10/15/2004 NIST-2709 true 130 13.4 34.6 NA 35,000 23.0 18.9 NA 15,100 10/15/2004 Recovery, in percent 102 103 107 NA 108 106 93 NA 109 10/15/2004 SO-2 found 11.7 7.9 12.0 26.8 58,900 49.2 17.9 10.3 6,000 10/15/2004 SO-2 true 12.3 7.6 NA 24.3 55,600 46.5 20.0 9.00 5,400 10/15/2004 Recovery, in percent 95 104 NA 110 106 106 90 114 111

10/15/2004 SO-4 found 55.8 10.6 23.7 12.6 25,700 29.2 13.5 18.6 6,68010/15/2004 SO-4 true 64.0 10.4 21.0 10.7 23,700 28.2 14.0 17.0 5,60010/15/2004 Recovery, in percent 87 102 113 117 108 104 96 109 11908/15/2009 NIST-2709 found 124 13.4 34.4 15.9 36,900 22.5 17.8 54.2 17,20008/15/2009 NIST-2709 true 130 13.4 34.6 NA 35,000 23.0 18.9 NA 15,10008/15/2009 Recovery, in percent 95 100 99 NA 105 98 94 NA 114
Appendix 221

Table C3A. U.S. Geological Survey Geologic Division Laboratory quality-control matrix-spike results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir watershed, San Diego County, California.—Continued[All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; NIST, National Institute of Standards and Technology; SWR, Sweetwater Reservoir]

Date

(mm/dd/yyyy) Manganese Molybdenum Nickel Niobium Phosphorus Potassium Rubidium Scandium Silver

10/15/2004 NIST-2709 found 588 2.2 87.6 13.5 646 21,750 97.9 12.8 NA10/15/2004 NIST-2709 true 538 2.0 88.0 NA 620 20,300 96.0 12.0 0.4110/15/2004 Recovery, in percent 109 108 100 NA 104 107 102 106 NA10/15/2004 SO-2 found 758 1.7 3.55 38.0 3,440 25,650 66.6 13.2 NA10/15/2004 SO-2 true 720 NA NA 22.0 3,010 24,500 77.0 11.3 NA10/15/2004 Recovery, in percent 105 NA NA 173 114 105 86 116 NA10/15/2004 SO-4 found 656 0.81 24.4 12.0 1,100 19,000 64.2 9.50 NA10/15/2004 SO-4 true 600 NA 24.0 10.0 900 17,300 69.0 8.40 NA10/15/2004 Recovery, in percent 109 NA 101 120 122 110 93 113 NA08/15/2009 NIST-2709 found 556 1.8 83.2 11 703 20,900 91.9 12.8 NA08/15/2009 NIST-2709 true 538 2.0 88.0 NA 620 20,300 96.0 12.0 NA08/15/2009 Recovery, in percent 103 90 95 NA 113 103 96 107 NA

Table C3A. U.S. Geological Survey Geologic Division Laboratory quality-control matrix-spike results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir watershed, San Diego County, California.—Continued[All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: mm/dd/yyyy, month/day/year; NA, not analyzed; NIST, National Institute of Standards and Technology; SWR, Sweetwater Reservoir]

Date

(mm/dd/yyyy) Sodium Strontium Thallium Thorium Titanium Uranium Vanadium Yttrium Zinc

10/15/2004 NIST-2709 found 11,800 245 0.66 10.9 4,040 2.85 121 19.9 11410/15/2004 NIST-2709 true 11,600 231 0.74 11.0 3,420 3.00 112 18.0 10610/15/2004 Recovery, in percent 102 106 89 99 118 95 108 110 10710/15/2004 SO-2 found 19,400 363 0.48 3.56 10,340 0.68 59.9 47.7 14110/15/2004 SO-2 true 19,000 331 0.58 3.80 8,600 0.98 57.0 40.0 12310/15/2004 Recovery, in percent 102 110 83 94 120 69 105 119 11510/15/2004 SO-4 found 11,150 178 0.50 7.87 3,360 1.91 89.3 20.1 10310/15/2004 SO-4 true 10,000 168 NA 8.60 3,400 2.24 85.0 22.0 94.010/15/2004 Recovery, in percent 112 106 NA 92 99 85 105 91 10908/15/2009 NIST-2709 found 11,900 232 0.64 10.8 3,630 2.95 119 17 12108/15/2009 NIST-2709 true 11,600 231 0.74 11.0 3,420 3.0 112 18.0 106 08/15/2009 Recovery, in percent 103 100 86 98 106 98 106 94 114
222 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table C3B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California. [See table 1 for site-identification number. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level] Site name Date (mm/dd/yyyy) Time (hh:mm) Aluminum Antimony Barium Beryllium Bismuth Cadmium Calcium Cerium Cesium [LRL] [50] [0.04] [0.2] [0.03] [0.06] [0.007] [100] [0.1] [0.003] Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 12:21 92,600 0.30 498 1.2 0.07 0.15 39,400 46.6 4.0 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 12:46 19,300 0.98 498 0.34

— 0.06 26,000 13.3 0.91

Table C3B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California.—Continued[See table 1 for site-identification number. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm) Chromium Cobalt Copper Gallium Iron Lanthanum Lead Lithium Magnesium [LRL] [0.5] [0.03] [2] [0.02] [50] [0.05] [0.4] [0.3] [6]

Sweetwater Reservoir east-end 

reservoir-fill boundary (SWR06)

10/13/2004 12:21 69.6 23.4 29.8 18.8 63,300 24.4 9.59 24.0 23,000

Sweetwater Reservoir near pump 

tower (SWR01)

08/10/2009 12:46 80.7 13.9 198 6.1 209,000 6.9 7.68 12.9 3,800
Appendix 223

Table C3B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California.—Continued[See table 1 for site-identification number. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm) Manganese Molybdenum Nickel Niobium Phosphorus Potassium Rubidium Scandium Silver [LRL] [0.7] [0.05] [0.3] [0.1] [5] [20] [0.01] [0.04] [2]

Sweetwater Reservoir east-end 

reservoir-fill boundary (SWR06)

10/13/2004 12:21 1,330 0.57 17.7 12.0 386 14,900 72.3 31.0 —

Sweetwater Reservoir near pump 

tower (SWR01)

08/10/2009 12:46 5,010 3.0 32.0 2.6 2,890 2,460 14.0 5.0 —

Table C3B. U.S. Geological Survey Geologic Division Laboratory quality-control replicate results for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California.—Continued[See table 1 for site-identification number. All values are reported as micrograms per kilogram (μg/kg), unless noted. Abbreviations: hh:mm, hour:minute; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above the laboratory reporting level; LRL, laboratory reporting level]

Site name Date (mm/dd/yyyy) Time (hh:mm) Sodium Strontium Thallium Thorium Titanium Uranium Vanadium Yttrium Zinc [LRL] [20] [0.8] [0.08] [0.1] [40] [0.02] [0.2] [0.05] [3]

Sweetwater Reservoir east-end 

reservoir-fill boundary (SWR06)

10/13/2004 12:21 19,800 248 0.54 6.80 7,820 1.55 201 37.9 113 

Sweetwater Reservoir near pump 

tower (SWR01)

08/10/2009 12:46 3,040 178 2.31 1,190 0.16 13.6 341 10.5 40.9
224 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed Table C3C. U.S. Geological Survey Geologic Division Laboratory quality-control replicate comparison for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California. [See table 1 for site-identification number. Values are given in percentage difference from environmental sample. Abbreviations: mm/dd/yyyy, month/day/year; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above the laboratory reporting level] Site name Date (mm/dd/yyyy) Aluminum Antimony Barium Beryllium Bismuth Cadmium Calcium Cerium Cesium Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 102 130 102 109 100 107 103 113 103 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 97.0 108 107 58.6 nr 85.7 102 97.1 96.8 Table C3C. U.S. Geological Survey Geologic Division Laboratory quality-control replicate comparison for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California.—Continued [See table 1 for site-identification number. Values are given in percentage difference from environmental sample. Abbreviations: mm/dd/yyyy, month/day/year; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above the laboratory reporting level] Site name Date (mm/dd/yyyy) Chromium Cobalt Copper Gallium Iron Lanthanum Lead Lithium Magnesium Sweetwater Reservoir east-end reservoir-fill boundary (SWR06) 10/13/2004 107 107 114 103 107 113 98.7 112 106 Sweetwater Reservoir near pump tower (SWR01) 08/10/2009 103 101 100 100 102 97.2 98.2 99.2 97.9
Appendix 225

Table C3C. U.S. Geological Survey Geologic Division Laboratory quality-control replicate comparison for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California.—Continued[See table 1 for site-identification number. Values are given in percentage difference from environmental sample. Abbreviations: mm/dd/yyyy, month/day/year; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above the laboratory reporting level]

Site name Date (mm/dd/yyyy) Manganese Molybdenum Nickel Niobium Phosphorus Potassium Rubidium Scandium Silver

Sweetwater Reservoir east-end 

reservoir-fill boundary (SWR06)

10/13/2004 111 112 111 109 112 101 105 108 —

Sweetwater Reservoir near pump 

tower (SWR01)

08/10/2009 110 96.8 105 100 104 98.0 96.6 96.2 —

Table C3C. U.S. Geological Survey Geologic Division Laboratory quality-control replicate comparison for metals in surficial bed-sediment samples collected in the Sweetwater Reservoir, San Diego County, California.—Continued[See table 1 for site-identification number. Values are given in percentage difference from environmental sample. Abbreviations: mm/dd/yyyy, month/day/year; nr, no replicate calculated; —, compound was not detected in environmental or replicate sample at a concentration above the laboratory reporting level]

Site name Date (mm/dd/yyyy) Sodium Strontium Thallium Thorium Titanium Uranium Vanadium Yttrium Zinc

Sweetwater Reservoir east-end 

reservoir-fill boundary (SWR06)

10/13/2004 97.5 103 102 105 109 112 117 111 107 

Sweetwater Reservoir near pump 

tower (SWR01)

08/10/2009 102 105 91.7 97.5 100 101 101 98.1 103
226 Water- and Air-Quality and Surficial Bed-Sediment Monitoring of Sweetwater Reservoir Watershed

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For more information concerning this report, contact:

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or visit our Web site at:

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Mendez and others—Water- and air-quality and surficial bed-sediment monitoring of the Sweetwater Reservoir watershed, 

San Diego County, California, 2003–09—Data Series 879

ISSN (online) 2327-638X (online)

http://dx.doi.org/10.3133/ds879